Software versions in this channel are updated about once a month. In this most conservative channel you receive the best tested versions. We recommend that you use PRTG's stable versions for live environments.
Please use the "Auto-Update" feature to update your PRTG installation: In the PRTG web interface, simply navigate to Setup | Auto Update. You can also obtain the latest version from the PRTG download page!
Manual: Using the "Software Auto-Update" Function of PRTG
Previous Versions and other Release Channels
API |
Filtering by object ID (filter_obj) properly works again. In the previous PRTG version 20.1.57.1745, API calls using filter_obj returned an empty response file, which affected XML, JSON, and CSV. |
Auto-Discovery |
You can add WMI sensors with the PRTG auto-discovery again. In the previous PRTG version 20.1.57.1745, the auto-discovery for WMI sensors did not work and did not create the sensors. |
Server |
This version includes an important security update for your PRTG core server. We recommend that you update as soon as possible. Please find more details in the email we sent to the email address provided in your license information. (CVE-2020-10374) Note: You will only receive the email if your PRTG server is affected. |
LDAP |
The LDAP sensor now supports LDAP over SSL (LDAPS). If you want to monitor your secured Active Directory server, choose the option Use LDAP over SSL for the sensor setting Connection Security in section LDAP Specific. LDAP without encryption is default. You can also define a custom port for the connection to the LDAP server or use the default port. |
VMware Host Hardware Status (SOAP) |
The VMware Host Hardware Status (SOAP) sensor now categorizes unknown states reported by the VMware host server as entity with its own sensor channel. You also have the sensor settings option to ignore unknown states so that they will not change the sensor status to warning nor appear in the sensor message. The setting Known Warnings is only purposed for warning states of the host server now. Because of this, you may encounter VMware Host Hardware Status (SOAP) sensors that show a new warning status after the PRTG update if the sensors receive unknown states. In this case, please change the Ignore Unknown States setting from the default option to Do not show unknown states if you do not want to have a warning status for unknowns. |
Notifications |
We added a few more placeholders for notifications. You can use a new placeholder that only resolves to the current sensor status and additional placeholders for elapsed times since status updates.
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Reports |
The column in the list of reports that shows the number of sensors included in the last run of a report now also updates if you run an HTML report. In previous version, only PDF reports were considered. We also renamed the column to # Sensors in last run to make it clearer what the numbers actually show. |
Security |
We updated the bootstrap.js plugin that we ship with PRTG because the previously used version 3.2.0 had an XSS vulnerability. (CVE-2019-8331) |
NetApp Volume |
We fixed an issue with the snapshot time calculation of the NetApp Volume BETA sensor. In certain cases, values of sensor channels like, for example, Latest snapshot and Oldest snapshot did not match the times displayed in the NetApp interface because the sensor mixed up the handling of UTC and local time. |
Sensor channels |
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WMI sensors |
WMI sensors now show an according error message (PE069) if they do not find any items to monitor on the target device during the meta-scan on sensor creation. |
API |
When you use an API call that returns PRTG objects sorted by a numerical property like objid, the returned objects are now numerically sorted. In previous versions, the objects were alphabetically sorted. For example, as of the current PRTG version, IDs (objid) are sorted like [2419, 2470, 10359, 10360], where in previous versions the sorting was [10359, 10360,2419, 2470] in such a case. |
Cluster |
PRTG now shows a correct error message if you provided a wrong cluster access key and try to log in into the failover node so that you can easier help yourself. |
Licensing |
We fixed an issue with the PRTG PLUS license where, in certain cases, PRTG instances erroneously showed the message your license will expire in [x] days so that you had to manually reactivate the license each time this case occurred. |
Maps |
You can add custom background images to maps again. In the previous PRTG version 20.1.56, PRTG showed an internal server error when you selected a file as Custom Image to use as Background Image and tried to save the map settings. |
Memory Usage |
The PRTG server may consume less memory over time in certain monitoring scenarios. We also improved the memory usage of maps that include many historic graph images. |
Reports |
The default Security Context of a report is again the PRTG user account that creates the report. |
Timezones |
The default timezone for newly created user accounts and reports is the system timezone of the PRTG server again. |
All parts of PRTG |
Various other minor fixes and improvements, updated user manual including a style update |
Npcap |
We updated the Npcap library that Packet Sniffer and Packet Sniffer (Custom) sensors use to monitor your traffic to version 0.9987. |
Beta sensors |
The following sensor types are not in beta status anymore and are now fully supported.
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Windows Server 2008 R2 |
If your PRTG server or remote probes run on Windows Server 2008 R2, the PRTG auto-update may fail on these systems because of the Npcap update. The reason is a Windows Security dialog window that appears when trying to install Npcap and that interrupts the PRTG update process. We have also seen cases where the PRTG auto-update succeeded but Packet Sniffer sensors changed to down status (or unknown) with the message that the winpcap.dll is missing. The dialog window comes because of a renewed code signing certificate of the Nmap project (Insecure.Com LLC) and has to be confirmed before PRTG can proceed with the installation. Please manually run the latest PRTG installer on the PRTG server and the remote probe installer on remote probe systems or manually install Npcap if you use Windows Server 2008 R2 and confirm the dialog window. See also the Knowledge Base article PRTG update process is unsuccessful while trying to install Npcap. What can I do? |
API |
Filtering by object ID (filter_obj) does not work in the current PRTG version 20.1.57.1745. API calls that use filter_obj return an empty response file (XML, JSON, CSV). Filtering currently only produces output if you change the parameter of filter_objid by left padding with zeros to length 10 (for example, 0000001002 for object ID 1002). Status: Resolved with PRTG 20.1.57.1786. |
Auto-Discovery |
The PRTG auto-discovery does not add WMI sensors in the current PRTG version 20.1.57.1745. Manually adding WMI sensors still works. Status: Resolved with PRTG 20.1.57.1786. |
By Sascha Neumeier • Mar 25, 2020
AWS Cost |
The new AWS Cost BETA sensor monitors the costs of your Amazon Web Services (AWS) account. It shows the total costs as well as a forecast of the total costs of your AWS account. You can optionally monitor additional types for costs and forecasts, like the cost types amortized and unblended costs, as well as the forecast types blended and net amortized costs, for example. The AWS Cost sensor will help you to keep an eye on your company AWS account's spending, as well on your single purpose AWS account's spending. If you set up channel limits, it can individually notify you if the costs become too high. |
Checkboxes |
We improved the appearance of checkboxes. You now find a standard checkbox icon everywhere in the PRTG web interface. In previous versions, PRTG used an individual icon in some sections, for example, in sensor lists, which made it unnecessarily difficult to immediately recognize its meaning. |
Sensors |
The performance impact bar that we added to sensor tabs in the last PRTG version 20.1.55 is now also available in several sensor lists. You can also directly open sensor lists sorted by performance impact from the main menu bar via Sensors | By Performance Impact and from the PRTG Status page, section Sensors by Performance Impact. The lists provide you a quick overview of the performance impact of all running sensors without having to individually look at each sensor, as well as the possibility to perform multi-edit on sensors with a certain impact, for example, to adjust scanning intervals and tweak the performance of PRTG. |
Active Directory |
We improved the performance of Active Directory user connections to the PRTG server. In rare cases, nearly simultaneous logins and usage with Active Directory based user accounts from PRTG Desktop and PRTG mobile apps were quite slow when the last connections were longer ago. |
Cluster |
Sensors in status Down (Acknowledged) now also show the according sensor log message on cluster failover nodes. |
Notifications |
You can now use placeholders for tags in notifications. With %objecttags you get the tags of the sensor that triggers the notification, %parenttags resolves to all inherited tags, and %tags is for the sensor's tags plus all inherited tags. Using tags in your notifications enables you, for example, to automatically route notifications to the appropriate response teams based on included tags. See also the Knowledge Base article What placeholders can I use with PRTG? |
Password Recovery |
PRTG no longer sends redundant emails during the forgot password process. With the improvements in this context in previous versions, you already get the information from the removed emails in the PRTG web interface. |
Security |
If you change the password of your PRTG user account, the content of the fields Old Password, New Password, and Retype Password is now always masked when the change is written to a log file. If you entered a wrong old password in previous versions so that PRTG could not save the password change, the according error message was logged with the entered old, new, and retyped passwords in clear text on the PRTG server. |
Session Handling |
We implemented further improvements for the handling of user sessions. |
Cisco IP SLA |
The Cisco IP SLA sensor now even finds interfaces if the meta-scan (querying available interfaces on sensor creation) exceeds 9,000 SNMP requests so that you are able to create all possible instances of the sensor on a large target system. You can also individually define the interface range for the meta-scan of the Cisco IP SLA sensor in the SNMP Compatibility Options of the parent device with the options Start Interface Index and End Interface Index as of this version. |
NetApp SnapMirror |
We fixed an issue with the NetApp SnapMirror BETA sensor that you could not create in certain scenarios. PRTG expected a return field that did not exist in such cases, resulting in error messages like An item with the same key has already been added. or Error: Object reference not set to an instance of an object when trying to add the sensor. |
SIP Options Ping |
We fixed an issue with the SIP Options Ping sensor where in certain cases the authentication failed because of an incorrect realm sent by PRTG. |
SNMP Traffic |
The default primary channel of SNMP Traffic sensors is always the Total channel again. In previous version, SNMP Traffic sensors that you newly added to PRTG with at least one of the Additional Channels came with Traffic In as primary channel. |
VMware Datastore (SOAP) |
The auto-discovery can create VMware Datastore (SOAP) sensors again. This did not work with custom device templates in previous versions. |
Maps |
We fixed an issue with public maps that, in rare cases, caused very high CPU load on the server when viewing a public map with changed security context. |
Object Names |
Names of monitoring objects like, for example, sensors, devices, groups, are now properly displayed on the object's details page even if they contain the character sequence left square bracket and a ([a). In previous versions, the name was cut off at this position. |
Sensor Values |
We fixed a rounding issue were numbers close to 0 like 0.01 or -0.01 were mistakenly rounded to 0 in sensor messages instead of correctly showing the decimal places. |
Cluster |
Switching the cluster node in map rotation works again. |
Graphs |
The values you enter into Vertical Axis Maximum and Vertical Axis Minimum in section Vertical Axis Scaling of channel settings now even take effect in graphs if you set the Display in percent of maximum option in the channel setting's Data section. |
Libraries |
|
Lookups |
We fixed some minor display issues of bitmask lookups on sensor pages. |
Logging |
PRTG now stores sensor logs in the \Logs\sensors subfolder of your PRTG program data path when the debug option write result to disk is enabled in the sensor settings. By default, this is C:\ProgramData\Paessler\PRTG Network Monitor\Logs\Sensors. In previous versions, sensor logs were written to the folder \Logs (sensors). |
All Parts of PRTG |
Various other minor fixes and improvements, updated user manual, updated German language file |
MQTT Round Trip |
We plan major changes to the MQTT Round Trip BETA sensor in an upcoming PRTG version. Once released, the changes will mean that any previously deployed sensors of this type will stop working and you will have to create them anew. We will inform you again as soon as the changes are included in a new PRTG version. |
Maps: Background Image |
In the current version, you cannot add custom background images to maps. When you select a file as Custom Image to use as Background Image for a map and want to save the setting changes, PRTG will show an internal server error and saving is not possible. Status: Resolved with PRTG version 20.1.57.1745. |
By Sascha Neumeier • Feb 7, 2020
SNMP Nutanix Cluster Health |
The new SNMP Nutanix Cluster Health BETA sensor provides an overview of your Nutanix cluster and shows the status of the cluster, as well as several performance metrics. Additionally to the quick status overview where you can see whether the cluster is started or stopped, for example, the new SNMP Nutanix Cluster Health sensors enables you to check I/O operations per second, used I/O bandwidth, and I/O latency with PRTG. |
SNMP Nutanix Hypervisor |
The new SNMP Nutanix Hypervisor BETA sensor monitors the health of your Nutanix cluster hypervisors. The sensor shows an overview of hypervisor performance metrics like CPU usage, traffic, and I/O data, as well as the number of active virtual machines on a node. |
Access Rights |
We improved the performance of the access rights check. This will speed up the loading times of objects in PRTG for non-administrative user accounts after the login. In certain cases, loading all objects after the login took quite long for user accounts except for the PRTG system administrator. |
Login |
We modernized the password reset approach that consists of receiving a link by email from where you can set your new password. |
Probe Connections |
We improved the stability of probe connections to the PRTG server. After performance improvements for probe connections in PRTG version 19.2.50, some customers reported issues with the connection stability in certain scenarios. For example, probe reconnects could result in an error state in which the communication between PRTG core server and the probe did not succeed although the connection was established. This resulted in sensors in unknown status on this probe. To prevent such issues, PRTG now uses the unique GID of the probe to identify the probe node and management object and not the ID. Because of this, all GIDs must have a valid format. It is not possible anymore to define any string as probe GID. If you previously used an invalid GID, PRTG will automatically generate a new, valid GID for the probe. For more details, see the article The probe GID of my remote probe changed. What is the reason? in the Knowledge Base. |
Geo Maps |
If PRTG cannot retrieve data for geo maps when using the Google Maps API because of, for example, a wrong API key or unavailability of the service, PRTG now will show according information in the geo map section and logs to exactly tell you what went wrong. |
Reports |
We improved the appearance of reports that include data graphs. The height of main and monthly graphs is now consistent in all report templates that include graphs. In previous versions, graphs in "graphs only" report templates were very large, so we reduced their size to be able to display channel averages on the same page and so help you to get as much information as possible at a glance. |
Sensors |
You are now able to directly identify the impact on the PRTG system performance of a running sensor in its general information section. Each sensor shows the performance impact bar that you already know from the Add Sensor page on its overview tab, live data tab, and data by days tabs. This information will help you to easier decide about what sensor types to use and which scanning intervals to configure to get the best PRTG system performance possible. |
Login |
We improved the handling of user sessions. |
WebGUI |
We fixed a potential XSS vulnerability of the PRTG web interface. |
Web Server |
This PRTG version comes with a more strict web server security by default to keep PRTG as secure as possible. TLS 1.2 will be the new default web server connection security. Note: The change may affect you if your PRTG users or third-party systems use outdated versions of browsers or PRTG mobile apps, the Enterprise Console, or old automation tools that interact with the PRTG API. You will receive a ToDo ticket in PRTG with further information. |
Python Script Advanced |
This PRTG version includes a new Python distribution because of the end-of-life announcement for Python 3.4. We replaced the existing paepy library with the prtg library, following the definition of the other custom script advanced sensors. Please review the updated Python Script Advanced sensor example sensor_example.py under Custom Sensors\python in your PRTG program folder and make sure your custom Python scripts are compatible with Python 3.7 when you update PRTG. For more information, see the Knowledge Base article After updating to PRTG 20.1.55, my Python Script Advanced sensors are down. Note: You only need to consider the changes if you are using the Python Script Advanced sensor. PRTG also creates a ToDo ticket with further information for you in this case. |
REST Custom (Sigfox) |
We adjusted the default Sigfox templates for the REST Custom sensor to adapt the Sigfox v2 API. With this change we also combined the device state template (sigfox.device.template) and the token state template (sigfox.device.token.template) into one new template with different channels. Also, required lookup files are available again. Note: To apply these changes, please create a new REST Custom sensor with the template sigfox.device.template. REST Custom sensors that use the old templates will not work anymore. |
WMI Disk Health and WMI Storage Pool |
We implemented some cosmetic improvements for the beta sensors WMI Disk Health and WMI Storage Pool that we newly introduced in the last PRTG version 19.4.54. Note: With these improvements, we also changed the names of some WMI Disk Health and WMI Storage Pool sensor channels. This change may lead to duplicated channels on running instances of these sensor types after updating PRTG. Channels with an old name will not receive data anymore and cannot be deleted. Please add sensors with duplicated sensor channels anew. |
Providers |
We removed the deprecated geographical map service provider CloudMade from PRTG. You cannot choose this provider anymore in section Geo Maps of the user interface settings in the PRTG system administration. If you had selected CloudMade before your PRTG update, the provider setting will be automatically changed to default. |
EXE/Script sensors |
We fixed an issue with encrypting passwords that contain certain special characters like the dollar sign ($). The issue affected EXE/Script and EXE/Script Advanced sensors. The dollar sign, for example, broke the encryption method, which resulted in a password being partly visible as clear text in the sensor log when you enabled the option Write EXE result to disk and used according placeholders in the parameters field. |
MQTT Round Trip |
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NetFlow V9 |
We fixed an issue where in certain cases NetFlow V9 sensors did not display the traffic usage. This happened on specific configurations where empty IPv6 data in flow packets overwrote available IPv4 data, which resulted in missing information in the sensor. |
Sensor Factory |
The Sensor Factory sensor now properly shows values even if you perform calculations with sum channels (channel ID -1). In previous versions, values and unit did not match the source channels when summing up the total channels of SNMP Traffic sensors, for example. |
SIP Options Ping |
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SMTP&IMAP Roundtrip |
The SMTP&IMAP Roundtrip sensor now automatically comes back after being down due to connection issues as soon as the connection is established again. In previous version, the sensor stopped working after connection interruptions like a firewall restart. |
SNMP Cisco System Health |
SNMP Cisco System Health sensors that you create via auto-discovery using the device template Cisco Device (Generic) now get only tags assigned that are suitable for the created sensor scope (for example, voltage, current, temperature). In previous versions, the automatically created sensors just got all Cisco system health tags assigned. |
SNMP Fujitsu System Health v2 |
The SNMP Fujitsu System Health v2 BETA sensor now updates the OID index if it changed (for example, after a restart of the target device) and the identifier still exists in the OID table. In previous versions, the sensor was not able to automatically repair the index if the OID table changed in a way that the OID index was not available anymore. This resulted in a down status with the sensor error message no such name, for example. |
SNMP HPE BladeSystem sensors |
We fixed a memory leak caused by running SNMP HPE BladeSystem Blade and SNMP HPE BladeSystem Enclosure System Health sensors. |
SSL Security Check |
The SSL Security Check sensor now actually uses the SOCKS proxy that you define in the Connection Specific settings of the sensor. In previous versions, the sensor just connected to the target host without using a proxy even if you defined one. |
Active Directory |
PRTG now automatically synchronizes user group memberships with the current status of a user account in the Active Directory. In previous versions, user accounts with changed Active Directory group memberships just remained in all user groups they have ever been members of. |
Auto-Discovery |
We improved the check for already existing devices so that the PRTG auto-discovery more reliably avoids creating duplicate devices for the same host. The fix applies in particular to cases where the host names of found devices only differ in uppercase and lowercase letters. |
Deleting |
You can directly delete devices from the device tree again even if they are paused by dependency. In previous versions, a device paused by dependency that you were trying to delete remained in the tree but only the sensors on the device were deleted. |
PRTG Status |
The PRTG Status page now lists sensors with a fixed scanning interval in the correct section of Sensors by Interval. This fix applies to Common SaaS and Windows Updates Status sensors, for example. |
Reports |
We fixed an issue with PDF reports that you could not generate anymore when using a symbolic link (symlink) or junction directory for the reports. The broken symlink functionality was also the reason that in some cases PDF reports did not work anymore after you have updated from a very old PRTG version to a current one. |
Search |
The search in PRTG works again even if you search for objects that include UTF-8 characters (for example, German umlauts or Russian or Japanese characters). In the last PRTG version 19.4.54, you did not get any search results in such a case. |
Sensor History |
The History tab of a sensor only shows entries for actual changes on sensor settings again. In previous versions, tags always showed up as changed in the history even if you only changed other sensor settings. |
Automatic Logout |
PRTG user accounts that were automatically logged out from the PRTG web interface after being inactive for a certain time see the reason for being logged out on the login page again. You can define the automatic logout under Setup | User Interface with the setting Automatic Logout in section Website. |
Firefox ESR |
PRTG now correctly recognizes and handles Firefox Extended Support Release (ESR) versions as supported. If you access the PRTG web interface with Firefox ESR 68 or later, PRTG will not mistakenly show the warning message Sorry, your browser is not supported! anymore. |
Maps |
Maps now correctly display Korean characters like the timestamps in graphs that you show on a map. |
Schedules |
The Save button gets activated again if you uncheck a specific time via hour or weekday buttons in the time table of a schedule in your account settings. |
All Parts of PRTG |
Various other minor fixes and improvements, updated user manual, updated Dutch language file |
By Sascha Neumeier • Dec 2, 2019
WMI Disk Health |
The new WMI Disk Health BETA sensor monitors the health of virtual or physical disks on your Windows servers. It shows the operational and health status of a disk. It does not matter which disk type, the sensor works with all kinds like SSD, SATA, or SAS, for example. The WMI Disk Health sensor shows detailed information about the operational status like degraded or predictive failure in the sensor message. With this new sensor type, you will always have a quick and easy overview of the status of your disks. |
WMI Storage Pool |
The new WMI Storage Pool BETA sensor monitors a storage pool on your Windows servers. A storage pool consists of multiple disks and provides RAID functionality without real RAID hardware. This new sensor type shows the operational and health status of the storage pool, as well as free space, and provides detailed information about the operational status like stressed or relocating. With the new WMI Storage Pool sensor, you will always have an overview of the status of your storage pool. |
Server |
This version includes an important security update for your PRTG core server. We recommend that you update as soon as possible. Please find more details in the email we sent to the email address provided in your license information. Special thanks go to Aleksandr Melkikh from Positive Technologies for pointing us to the right direction. (CVE-2019-19119) |
Access Rights |
Users with restricted access rights to sensors now only see a sensor's relationship in the Similar Sensors Overview if their user account has access to both related sensors. |
Sensors |
We fixed a potential Remote Code Execution (RCE) vulnerability of the HTTP Transaction sensor. (CVE-2019-11073) |
Server |
We fixed a potential Remote Code Execution (RCE) vulnerability of the PRTG core server. Many thanks to Sittikorn Sangrattanapitak - Cybersecurity Researcher, Nuttakorn Tungpoonsup & Ammarit Thongthua - Secure D Center Research Team, Secure D Center Co.,Ltd. for reporting the issue. |
Version Number |
PRTG does not show the current version number in HTTP headers anymore to improve security by not providing attackers potentially relevant information. For the same reason, the page footer of the web interface now only shows the version number on pages that require a logged in user account. |
MySQL v2 |
MySQL v2 sensors support user-defined variables in your SQL scripts again. This did not work in previous PRTG versions due to a change in the MySQL library, which added a new connection setting to allow user variables. The sensors showed the error message Fatal error encountered during command execution when running a SQL statement with user-defined variables. |
Port |
You can now also save the advanced Port sensor setting Goal into custom device templates. The goal of a Port sensor can be an open or closed port to define an up status. |
SNMP Library |
SNMP Library sensors again create each channel only once. If you selected more than 10 OIDs when adding the sensor in previous versions, the last channel of the sensor created for the first 10 OIDs was also created as first channel of the sensor added for the next 10 OIDs. |
Cluster |
Minor stability improvements for PRTG cluster installations |
Data Purging |
PRTG now correctly applies the data purging value for Historic Sensor Data even if you define a value that is greater than 1095 days (3 years). In previous versions, PRTG did not purge historic data anymore if you used a value above 1095 days. You can now define a maximum value of 9999 days. |
Overload Protection |
PRTG will only create one ToDo ticket and one log entry again when overload protection gets activated due to 100 failed logons since the last start of PRTG. In previous versions, PRTG was too noisy with an active overload protection, which could result in way too many tickets indicating that Web server is slowing down login attempts (Protective measure) in some cases. |
Reports |
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Search |
The PRTG search function works properly again. In some cases, the search did not provide any results in previous PRTG versions and required a restart of the PRTG core server to work. |
Sensor Messages |
PRTG now correctly shows sensor messages in logs and notifications on status change (for example, due to a breached limit) even in certain corner cases. In previous versions, timing issues could result in logs and notifications just showing "OK" instead of the sensor message in such cases. |
Libraries |
Libraries do not contain buttons to add devices, sensors, or to run an auto-discovery anymore. The buttons had no functionality anyway because libraries are designed for visualization, not interaction. |
Maps |
The object selector in the map designer to link a map object with an object from the device tree shows the whole tree again. In previous versions, objects at the bottom of the device tree were cut off so you could not select them. |
Multi-Edit |
You can see and change Sensor Display settings again when you open the settings of one or more sensors via multi-edit. |
Updating |
The auto-update confirmation dialog window now immediately reacts when you click the Yes, install update now button. |
JSON |
The value of the notifiesx_raw field returned by the API call api/table.json?content=sensorxref is never null now and always the same value no matter which language. In previous versions, notifiesx_raw could be empty as well. If you use external tools or scripts that use the PRTG API, please keep this change in mind and adjust them if necessary. |
Optional Downloads |
The PRTG web interface now also shows download links for PRTG Desktop on the Welcome page and under Setup | Optional Downloads on PRTG instances hosted by Paessler. Furthermore, we removed the PRTG Tools tab from the web interface section Setup | Optional Downloads. Of course, you still can download our free network tools on our website. |
Enterprise Console |
We no longer deliver the Enterprise Console with the PRTG installer. This change will not affect running Enterprise Console instances, but please note that they may stop working anytime in upcoming PRTG versions. We recommend that you switch to PRTG Desktop soon. Note: The Enterprise Console might not be able to automatically connect to the PRTG server anymore after you have updated to version 19.4.54 and you receive the error message Server runs incompatible software version. In this case, exit the Enterprise Console as well as the Windows tray and run the Enterprise Console again. If it still cannot connect, run PRTG Enterprise Console.exe with the ignore flag. For more information, see the Knowledge Base article Enterprise Console doesn't connect to PRTG core server anymore after updating PRTG. What can I do? Note: If you update from an older PRTG version, your Enterprise Console may show an error message asking you to update the Enterprise Console. This will fail because of the missing installer as of PRTG 19.4.54. For your convenience, you can still directly download the latest installer as well as the latest version of the Enterprise Console here and try to manually update: prtg_enterprise_console_54.zip If you want to update the Enterprise Console on the PRTG core server, extract PRTG Enterprise Console.exe into your PRTG Network Monitor program folder and run it. On other systems, you can just run PRTG_Enterprise_Console_Installer.exe to update. Please note that this is a workaround to keep the deprecated Enterprise Console running if mandatory and may not work in every case. |
All Parts of PRTG |
Various other minor fixes and improvements, updated user manual, updated language files |
Python Script Advanced |
PRTG version 20.1.55 that we will publish in January 2020 will include a new Python distribution because of the end-of-life announcement for Python 3.4. We already inform you now about the change because your custom Python scripts must be compatible with Python 3.7 when you update to PRTG 20.1.55. You only need to consider the change if you are using the Python Script Advanced sensor. PRTG will also create a ToDo ticket with further information for you in this case. |
Web Server |
PRTG version 20.1.55 that we will publish in January 2020 will include a more strict web server security by default to keep PRTG as secure as possible. TLS 1.2 will be the new default web server connection security. The change may affect you if your PRTG users or third-party systems use outdated versions of browsers or PRTG mobile apps, the Enterprise Console, or old automation tools that interact with the PRTG API. You will receive a ToDo ticket in PRTG with further information. |
PRTG Certificate Importer |
There is a new version of the PRTG Certificate Importer available since December 12, 2019. The new version is compatible with PRTG 19.4.54 and later. Installer and executable are now signed to confirm their integrity. Additionally, we introduced a new versioning system that follows the PRTG versioning, so the current version of the PRTG Certificate Importer comes with version number 19.4.54. For more details and to download it, please see PRTG Certificate Importer on our website. |
By Sascha Neumeier • Nov 11, 2019
SNMP Fujitsu System Health v2 |
The new SNMP Fujitsu System Health v2 BETA sensor monitors the status of a Fujitsu PRIMERGY server via iRMC. It might also work with the Fujitsu product lines PRIMEQUEST, ETERNUS, and CELSIUS if they have iRMC available. The sensor shows useful metrics for CPU usage, fans, memory modules, battery, and power supply of your Fujitsu servers. We are looking forward to hearing your feedback about this new beta sensor! Please send your feedback to [email protected]. Note: The new SNMP Fujitsu System Health v2 sensor replaces the original SNMP Fujitsu System Health BETA sensor and addresses the feedback we received from you about this sensor type. Please note that any previously deployed SNMP Fujitsu System Health sensors will immediately stop working upon updating to PRTG 19.4.53 or later. You need to add the new version of the sensor to continue monitoring your Fujitsu servers. To keep historic data, you can pause existing instances of deprecated sensors. |
Login |
We improved the security of the password recovery function on the PRTG login page. PRTG will not provide any information about user accounts anymore when you request a new password. |
Sensors |
We updated the Npcap library that Packet Sniffer and Packet Sniffer (Custom) sensors use to monitor your traffic. The Npcap version (0.992) distributed with previous PRTG versions included a security issue with an ACE vulnerability (CVE-2019-11490). Note: Under certain circumstances, the PRTG update process may stop when trying to install Npcap and Windows shows the error message A LWF & WFP driver installation tool has stopped working. In this case, please manually stop npcapoem.exe (for example, via the Windows Task Manager) to continue the PRTG update process. For more information, see the Knowledge Base article https://kb.paessler.com/en/topic/86904. |
Active Directory |
PRTG automatically clears the cache for Active Directory integration again. In previous versions, the hourly clearing of the cache did not work so old passwords still worked after changing them until you logged in with the new password or manually cleared the cache. |
Cloning |
Clones of flow sensors (NetFlow, IPFIX, jFlow, sFlow) are now able to automatically receive data after you have resumed them. If you clone a flow sensor to the same probe, the clone will keep the IP selection as defined in the sensor settings to receive flow packets. If you clone a flow sensor to a different probe, the clone will receive flow packets on all available IP addresses of the probe by default. |
Dependencies |
You can save settings again even if PRTG detects an invalid Dependency Type on the same page, for example, if a sensor is not existing anymore that was selected as dependency type for the current object. In previous versions, you were not able to save the settings in this case—even if you just renamed the object—because data validation failed and you received the message Error (Bad Request) when saving. |
Device Tree |
We fixed an issue where the PRTG core server was not able to load the device tree anymore. This happened in rare cases if there were inconsistent or pending internal tree states. |
Logging |
We fixed an issue where PRTG did not correctly recognize the size of log files in corner cases. The issue could result in a steadily increasing log file size instead of making a copy and recreating the file, so that log files could still become very large in such cases. |
Notification Triggers |
We improved the performance of the Notification Triggers tab. Actions like adding or removing notification triggers provide feedback considerably faster than in the previous PRTG versions 19.3.51 and 19.3.52. |
PRTG Status |
The PRTG Status page shows the correct value for StateObjects again. |
Scanning Interval |
Objects now show the selected scanning interval even if you have deleted this interval from the Monitoring settings. |
Shutdown |
We improved the shutdown process of the PRTG core server. In certain cases, ending the dependency thread took very long. This could result in a failing automatic restart because the check for successful termination of the PRTG server service could not be performed in such cases. |
Maps |
The map object Device Tree (S) now shows the correct color for the status Down (Acknowledged), just like all other device tree map objects. |
Tables |
We improved the layout of data tables on sensor overview pages by making the alignment of columns more consistent. The Channel column is always left-aligned as before, all other columns are now right-aligned. |
All Parts of PRTG |
Various other minor fixes and improvements to all parts of PRTG, updated user manual, updated German language file |
Python Script Advanced |
PRTG version 20.1.55 that we will publish in January 2020 will include a new Python distribution because of the end-of-life announcement for Python 3.4. We already inform you now about the change because your custom Python scripts must be compatible with Python 3.7 when you update to PRTG 20.1.55. You only need to consider the change if you are using the Python Script Advanced sensor. PRTG will also create a ToDo ticket with further information for you in this case. As of PRTG 20.1.55, the path that PRTG uses for Python is %programfiles%\PRTG Network Monitor\python3\ on 32-bit (x86) systems, and %programfiles(x86)%\PRTG Network Monitor\python3\ on 64-bit (x64) systems. |
Enterprise Console |
We do not officially support the Enterprise Console with PRTG version 19.4.53 or later anymore. Please note that your Enterprise Console may stop working in upcoming versions without further notice due to changes to the PRTG server. Please use PRTG Desktop as successor of the Enterprise Console. |
Summarized Notifications |
PRTG can send summarized notifications again. In previous PRTG versions 19.3.51 and 19.3.52, PRTG only sent the first notification but not the following summarization. The issue affected all notification summarization options of your notification templates. |
By Sascha Neumeier • Oct 9, 2019
WMI Battery |
The new WMI Battery BETA sensor monitors status and available capacity of batteries that are connected to Windows devices. Additional channels of this new sensor type show voltage, time estimations until the battery is full or empty depending on the status charging or discharging, and an overall battery health value. The sensor makes it possible for you to see the level of batteries in your IT infrastructure at a glance. PRTG alerts you as soon as a battery threshold is breached. You can even generate reports to get to know how much time laptops spend charging, for example. Please note that the sensor is in beta status and only works if the required WMI battery classes are available on the monitored device. We welcome any feedback about the sensor and what you are trying to monitor. Please send your feedback to [email protected], thank you! |
Device Icons |
We added new device icons for several vendors. PRTG will automatically add suitable icons to devices detected via auto-discovery if possible. Of course, you can also manually select any device icon in the device settings, section Additional Device Information. The new set includes icons for the following vendors.
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SNMP Dell PowerEdge Physical Disk |
Newly added SNMP Dell PowerEdge Physical Disk sensors now include the enclosure ID in the sensor name if available. For example, a sensor name can be Physical Disk 1:0:0:16, where the first of four numbers is the enclosure ID (here: 1). If there is no enclosure ID available, there will be three numbers in the sensor name, for example, Physical Disk 0:0:16. This improvement will help you to easier find the disk you are looking for in PRTG. |
PRTG Core Server |
We fixed potential reflected XSS vulnerabilities with medium severity on the PRTG core server. The potential vulnerabilities affected tag filters, object IDs, and the contact support/feedback page. Please note that the fixed vulnerabilities required a logged in PRTG user account to be exploited. |
Sensors |
We fixed a potential Denial of Service (DoS) vulnerability of the HTTP Full Web Page sensor. Please note that the fixed vulnerability required a logged in PRTG user account with elevated rights to be exploited. (CVE-2019-11074) |
Event Log (Windows API) |
You can filter for more than two event IDs with the Event Log (Windows API) sensor again. In the previous version, the input validation of the event ID field in the sensor settings did not properly work when you entered a comma-separated list of more than 2 IDs. |
Exchange (PowerShell) sensors |
Exchange (PowerShell) sensors now correctly close the runspace. In previous versions, Exchange (PowerShell) sensors sometimes showed a down status with the error message Fail to create a runspace because you have exceeded the maximum number of connections allowed. The fix applies to all Exchange (PowerShell) sensor types, Exchange Backup (PowerShell), Exchange Database (PowerShell), Exchange Database DAG (PowerShell), Exchange Mail Queue (PowerShell), Exchange Mailbox (PowerShell), Exchange Public Folder (PowerShell). |
EXE/Script sensors |
EXE/Script and EXE/Script Advanced sensors again support the special characters round brackets "()", dot ".", and comma "," in the Parameters field. This allows you to pass arrays from the sensor to the script. |
Sensor Factory |
We fixed an issue where, in rare cases, modifying the spike filter in combination with Sensor Factory sensors caused issues with the PRTG core server, resulting in gray sensors, for example. |
SNMP Cisco System Health |
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SNMP HPE BladeSystem sensors |
Channels of SNMP HPE BladeSystem Blade and SNMP HPE BladeSystem Enclosure System Health sensors will not be saved into custom device templates anymore. We changed it this way because dynamic sensor channels often lead to empty channels when they are created by custom device templates. |
SNMP Poseidon Environment |
You can add SNMP Poseidon Environment sensors again. The field validation in the settings when adding the sensor did not correctly work and prevented you from creating the sensor. |
SNMP Traffic |
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SQL v2 sensors |
We fixed an issue with SQL v2 sensors where the impersonation with Windows or database credentials prevented the sensor to read the file with the SQL query if the impersonated user had no access to the query files. The error message in this case was Parameter -query is missing. The fix applies to the sensor types ADO SQL v2, Microsoft SQL v2, MySQL v2, Oracle SQL v2, Oracle Tablespace, PostgreSQL. |
SSL Certificate |
The SSL Certificate sensor properly compares wildcard CN/SAN (Common Name/Subject Alternative Names) and SNI (Server Name Identification) again. In previous versions, the sensor showed a down status with the message CN/SAN do not match in this case. |
SSL Security Check |
If you create a device template that includes SSL Security Check sensors, running an auto-discovery with the template will now actually create SSL Security Check sensors. In previous versions, the auto-discovery erroneously added Port sensors in this case. |
Windows Updates Status (PowerShell) |
The Windows Updates Status (PowerShell) sensor will create more than one channel again if it can retrieve according data. The change will especially improve the sensor if the target device runs on Windows 10, Windows Server 2016, or later. |
SNMP sensors and System Information |
We implemented a minor stability improvement for the SNMP engine of PRTG. SNMP sensors as well as System Information tables retrieving data via SNMP can handle NUL in response strings again. For example, System Information tables showed the message Error: SNMPERR_GENERR (SNMP error #-1) with a timeout while waiting in WorkEnter in previous versions when receiving NUL strings. |
Optional Sensor Channels |
Sensors again only create optional channels if the channels are intended to be created. In the previous PRTG version 19.3.51, sensor types like, for example, SNMP Traffic and Ping erroneously created additional channels even if you did not select the according options in the Add Sensor dialog. |
Spike Filter |
Spike filters that you can optionally set apply to the tabs 30 days (Graph 2) and 365 days (Graph 3) again, as well as to historic data reports. In the previous PRTG version, the filter only worked for live data and the 2 days graph and table. |
Notification Delivery |
We removed the Test SMTP Settings button in the Notification Delivery settings on PRTG instances that are hosted by Paessler. As PRTG hosted by Paessler customer, you use the email infrastructure of Paessler so that testing the SMTP delivery settings is not necessary for you. |
Notification Templates |
PRTG user accounts with read/write rights and write or full access rights to a notification template can now change the user group as the recipient of an email, push, or SMS notification. Logged in read/write users can see and select all user groups they are member of, as well the currently selected user group in the Send to User Group field of a notification template. In the Send to User field, read/write users can see and select all user accounts from all user groups they are a member of, as well as the currently selected user account. |
SMS Notifications |
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PDF Layout |
We fixed an issue with PDF reports that erratically caused big gray boxes in generated reports. |
PDF Stability |
We implemented stability improvements for PDF reports with many sensors, especially regarding timeouts with the error message Error creating PDF report: [timestamp] navigate error: timed out waiting for response from chrome. |
Node Types |
Libraries again only show a subtree if you select Show a subtree of the device tree in the library as Node Type for a library node. In previous versions, library nodes additionally showed an unordered list of sensors included in the subtree. |
Usability |
The buttons to collapse and expand library nodes are now also available in the smallest view (S). |
Data |
We fixed an issue where values of primary sensor channels with negative channel ID were not displayed in some data tables, for example, the Traffic Total channel of SNMP Traffic sensors (channel ID -1). The value of this channel was missing in headers of historic data reports and as Last Value in Cluster Node tables, for example, when set as primary channel in the last PRTG version. |
Logging |
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Memory |
We fixed an issue where in certain cases the PRTG server showed a too high memory consumption on large installations with, for example, several thousand sensors. The PRTG server will also use less memory than before when cloning hundreds of objects in the device tree at the same time. |
PRTG Core Server |
We removed an unnecessary readlock on the PRTG server that could lead to a deadlock with an unintended PRTG server restart in rare cases. Another readlock we fixed was caused by calculations of the Sensor Factory sensor and could prevent the PRTG server to restart. |
PRTG GUI Starter |
Opening the PRTG web interface with the PRTG GUI Starter now also works if you have set the connection security of your web server to High security (TLS 1.1, TLS 1.2). The PRTG GUI Starter is only used if you open PRTG via the shortcut PRTG Network Monitor that is created by default on your server during the PRTG installation. |
Dependencies |
It is not possible anymore to configure a sensor to be its own dependency. Having a sensor as its own dependency resulted in a situation where a sensor endlessly paused itself when it switched to a down status without the possibility to resume the sensor. |
Gauges |
The gauge of a sensor's primary channel now always shows the unit for the minimum value. In previous version, the unit for the minimum value was missing if the minimum was 0 and the channel had a custom unit. |
Multi-Edit |
You can now acknowledge one or more down states on the Alarms tab of probes using the multi-edit menu, as well as open the settings of one or more probes. |
Tables |
We fixed some layout issues of meta-scan tables in sensor settings so that especially large tables are displayed in a better way. |
Firefox |
Opening the context menu in the PRTG web interface via right-click now even works if you use Firefox on macOS. |
Internet Explorer 11 |
We fixed some more layout issues that occurred when accessing the PRTG web interface with Internet Explorer 11. For example, the Save button was cut off on some pages, the Hide and Show buttons for master dependencies in the dependencies graph were missing, and tickets sometimes occupied more space than given to them. |
Probes |
Connecting remote probes now automatically downgrade to the correct version if the PRTG core server runs an older version than the probe. |
Tags |
It is not possible anymore to add the same tag to one object in PRTG more than once. |
User Accounts |
It is not possible anymore to create user accounts with a login name that includes the special characters " / \ [ ] : ; | = , + * ? > < Note: User accounts that already existed before the update to PRTG 19.3.51 and have a login name that includes one of the outlined special characters will still be able to login after the installation of version 19.3.51. However, affected user accounts will not be able to change and save their account settings without changing the login name. |
All Parts of PRTG |
Various other fixes and improvements to all parts of PRTG, updated user manual, updated German and Japanese language files |
SNMP Fujitsu System Health |
The upcoming PRTG version 19.4.53 will include a new, significantly improved SNMP Fujitsu System Health sensor. We already inform you now about the change because any previously deployed SNMP Fujitsu System Health sensors will immediately stop working upon updating to PRTG 19.4.53 or later and need to be added anew. |
Outdated Windows Versions |
It is not possible anymore to install PRTG on the outdated operating system Windows XP. This is a side-effect of changing the PRTG license check to a 64-bit binary. Please make sure you install PRTG on an officially supported operating system. |
Summarized Notifications |
In the current version, PRTG does not send summarized notifications. You will receive the first down notification in any case but not the following summarization. We recommend that you choose the option Always notify ASAP, never summarize until we provide a fixed version if you strongly rely on potentially summarized notifications and do not want to miss any information. Status: resolved with PRTG 19.4.52.3515 |
Active Directory Replication Errors |
The Active Directory Replication Errors sensor now supports different Active Directory naming contexts. When you add the sensor, you can now choose between Configuration (default), Schema, DomainDnsZones, Domain, and ForestDnsZones as Naming Context to check your Windows Domain Controller for replication errors. In previous versions, the sensor always used Configuration as naming context. |
Notification Delivery |
PRTG will now provide clearer communication in logs and tickets when an SMS notification fails due to a missing definition for an SMS provider in the Notification Delivery settings. |
Notification Triggers |
You can now directly create a new Notification Template while editing or defining a Notification Trigger without leaving the notification trigger tab. Click the plus symbol (+) in the dropdown list of a trigger to create a new notification template for the notification trigger. |
Active Directory |
We improved the login process for Active Directory (AD) users by explicitly requesting read-only access. |
Device Templates |
If you create a new device template, you now only need to define a name for the template. You do not have to provide a file name anymore, PRTG will automatically create the corresponding template file with the extension .odt. |
PRTG Core Server |
Performance and memory footprint improvements for the PRTG core server, as well as several other improvements and fixes |
Reporter |
We added enhanced logging to the new reporter engine to be able to better help you in case of issues when generating reports. |
Maps |
We fixed a potential XSS vulnerability in the context of maps. Thanks to Dmitry Galecha from Positive Technologies for reporting the issue. |
Notifications |
Passwords of Execute Program notifications, webhooks for Slack and Microsoft Teams notifications, as well as the AWS Secret Access Key of Amazon SNS notifications are now masked on the History tab of according notification templates in the PRTG web interface. Notification templates are only accessible for PRTG administrator users and read/write users with access rights for a particular notification template. We found the issue in internal tests, it was not public before. If your PRTG installation is affected, you will receive a Todo ticket in PRTG. Please follow the instructions there. |
Sensors |
Passwords of the following sensor types are now also masked in log files when you enable the debug option: FTP Server File Count, HTTP XML/REST Value, SIP Options Ping, Citrix XenServer Host, Citrix XenServer Virtual Machine, IPMI System Health |
Language Files |
Major update for all language files with around 585 improved strings per language. We especially focused on consistency of translations throughout PRTG. |
Event Log (Windows API) |
You can filter for two event IDs with the Event Log (Windows API) sensor again. In previous versions, the input validation of the event ID field in the sensor settings did not properly work when you entered a comma-separated list of IDs. Note: With this version, it is not possible to filter for more than two event IDs. We plan to fully support filtering for multiple IDs again for the next PRTG version 19.3.52. |
EXE-based Sensors |
Sensors that require .NET version 4.7.2 now actually show the required version number 4.7.2 in the error message if the .NET framework version 4.7.2 is not available on the probe system. The full error message is This sensor requires the .NET Framework version 4.7.2 (code: PE104) For more details, please see this Knowledge Base article. |
Flow Sensors |
It is possible again to clone flow sensors and devices on which flow sensors are running (for example, NetFlow sensors). In previous PRTG versions, you received Error (Not Found) when cloning flow sensors. Note: To receive data with a flow sensor clone, please open the Settings tab of the sensor and click Save. |
SNMP Traffic |
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VMware Datastore (SOAP) |
The VMware Datastore (SOAP) sensor now also properly works if the name of the monitored datastore starts or ends with host. In previous version, the sensor showed a down status with the error message The object '[name]' has already been deleted or has not been completely created in such cases. |
Memory Leak |
We fixed a small memory leak on the PRTG probe system. The memory leak was caused by SNMP sensors that use SNMP bulk walks with more than 20 channels. |
Probe Connections |
We improved the stability of remote probe connections to the PRTG server. In some scenarios, customers encountered frequent disconnects of remote probes with the previous PRTG version 19.2.50. Note: In certain cases, there may still occur issues with probe connections. We are working on further stability improvements for upcoming releases. |
Probe GID |
PRTG now always blocks connection attempts of deleted or rejected remote probes if there is an according entry in the Deny GID field of the Probe Connection Settings. The entry was not correctly saved in previous versions when using the French language file, Other language versions were not affected |
Cluster |
Sending support bundles from failover nodes works again. |
Dependencies |
We fixed an issue with dependencies where in certain cases devices and sensors did not resume automatically from paused by dependency. This happened, for example, after changing the dependency type from "Master object for parent" to "Use parent". |
Device Tools |
Opening the Service URL of a device via Device Tools now even works if the service URL contains an ampersand (&). |
Geo Maps |
Locations that you newly define for devices and groups in PRTG show up at the corresponding location in geo maps again. |
PRTG Core Server |
We fixed an issue with the PRTG core server that was not able to start and remained stuck in Loading Graph Cache if the configuration file contained an invalid speed trigger value. This happened in a few cases by error after cloning sensors with defined with speed triggers. |
Raw Data Buffer |
We fixed an issue that resulted in a full raw data buffer (see the according channel of the Core Health sensor) in certain scenarios with the previous PRTG version 19.2.50. This could happen, for example, when having many remote probes connected. The issue could also cause a loss of monitoring data with many sensors in unknown status. |
User Accounts |
It is possible again to change the settings of a user account at any time. Previous PRTG versions erroneously showed the error message A user with this login name already exists. Login names have to be unique. in certain cases when changing user settings. This especially happened for user accounts that you integrated via Active Directory. |
Access Rights |
Primary groups of read/write user accounts in PRTG again automatically get write access to libraries, maps. reports, notification templates, and schedules that they create. This way, the new object remains visible after a page fresh for the user who created it. |
Breadcrumbs |
We implemented some minor improvements for the consistency of breadcrumbs and their translations. |
Contact Support |
PRTG user accounts with read/write rights can now also open the contact support form via Setup | Contact Support in the main menu bar. |
Dark Theme |
Historic data graphs keep their dark theme appearance again when you use the scroll and zoom buttons. |
Homepage URL |
Changing the PRTG Homepage URL in your account settings or via Make This My Homepage in the main menu bar on a PRTG hosted by Paessler instance now actually takes effect. |
Hover Popups |
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Reports |
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Search |
Text that you are searching for in PRTG is correctly displayed again even if your search contains special characters or whitespaces. Search results were not affected by the issue. |
Tags |
Tags can now contain certain special characters like ampersand (&) and percentage (%) without causing issues with the PRTG web interface when you filter for such a tag. |
Welcome Page |
The ticket count on the PRTG welcome page again shows the correct number of open tickets that are assigned to you. |
All Parts of PRTG |
Various other fixes and improvements to all parts of PRTG, updated user manual |
Loopback Adapter |
PRTG will not install a loopback adapter as part of the Npcap library for Packet Sniffer sensors anymore. When enabled, the adapter could lead to unwanted side-effects on other services, for example, DHCP servers. |
Tree Version Update |
The configuration file of this version is not downwards compatible with previous PRTG versions. |
Enterprise Console |
The Enterprise Console will show two error messages when you close it: MM Operation after uninstall. and Runtime error 204 The messages do not have negative impact. You can ignore them and just close the message windows. Status: Will not be fixed. Please note that we will stop officially supporting the Enterprise Console with PRTG 19.4.53. Please use PRTG Desktop as successor of the Enterprise Console. |
Optional Sensor Channels |
Some sensor types create optional channels that were not intended to be created. For example, SNMP Traffic sensors create all channels from settings section Additional Channels even if they were not selected in the Add Sensor dialog. The Ping sensor creates channels for minimum and maximum ping time, as well as the packet loss channel, even if you select the option Send one single Ping when adding the sensor. The issue does not have functional impact as long as you do not set one of the erroneously created channels as primary channel. In this case, the sensor may switch to the unknown status. Please note that channels cannot be deleted anymore once they are created, so we recommend that you wait for the next PRTG version if you plan to add sensors of these types without optional channels. Status: resolved with PRTG 19.3.52.3502 |
Reports |
Big reports with thousands of sensors occasionally time out and are not successfully created. The message in this case is Error creating PDF report: [timestamp] navigate error: timed out waiting for response from chrome Status: resolved with PRTG 19.3.52.3502 |
Spike Filter |
In the current version, the spike filter only applies to graphs and tables for live data and 2 days (Graph 1 in graph settings). It is not possible with PRTG 19.3.51 to remove spikes from graphs and tables for 30 days (Graph 2), 365 days (Graph 3), and historic data reports. Please note that this is a display issue, monitoring data is not affected. As soon as you update to a fixed version, all historic data will be correctly displayed again, respecting optionally set spike filters. Status: resolved with PRTG 19.3.52.3502 |
Summarized Notifications |
In the current version, PRTG does not send summarized notifications. You will receive the first down notification in any case but not the following summarization. We recommend that you choose the option Always notify ASAP, never summarize until we provide a fixed version if you strongly rely on potentially summarized notifications and do not want to miss any information. Status: resolved with PRTG 19.4.52.3515 |
PRTG 19.3.51.2725 |
Please note that we took PRTG version 19.3.51.2725 (released on July 31) offline on August 5 as a precaution because some customers reported serious issues after the update to this version.
Affected customers reported 100% CPU load and many sensors in gray Unknown status due to a full graph cache recalculation that PRTG must do from time to time. We found the reason for the misbehavior and were able to resolve the issue. PRTG 19.3.51.2830 includes a fix for this, as well as three other fixes compared to 19.3.51.2725. If you are running the withdrawn version 19.3.51.2725, please update as soon as possible. |
Active Directory Replication Errors Sensor |
The Active Directory Replication Errors sensor now uses the naming context Configuration as default. This is also the naming context that the sensor used in previous version. With the support of different naming contexts introduced in PRTG 19.3.51.2725, the default was Domain, which, in certain cases, resulted in sensors of this type that did not find the replication neighbor anymore after the update. |
Auto-Discovery Groups |
Adding an auto-discovery group or editing the settings works properly again. In PRTG 19.3.51.2725, several IP selection methods caused an access violation when saving the settings. |
Updating |
We fixed an issue where, in rare cases, updating from older PRTG versions like, for example, 17.3.33, failed because of the tree version update in combination with certain history entries in the PRTG configuration file. |
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