This article applies as of PRTG 24 Exploring Script v2 Sensor: Comprehensive Examples and Implementation Guidelines Script v2 sensor example scripts Updates as of PRTG 23.x.82 contain the Script v2 sensor and Python script examples for th...

This article applies as of PRTG 22 Understanding Sensor Factory sensor status() function, decoding the relationship between TRUE, FALSE, and sensor statuses. Examples and insights on crafting custom status definitions and utilizing boolean o...

This article applies as of PRTG 22 What functions I can use with Sensor Factory sensors. What are Sensor Factory sensors for? How do I set them up? What can I configure there? Using Sensor Factory sensors Sensor Factory sensors are mainly...

This article applies as of PRTG 22 and later. In my network, I have a no break (UPS) system that implements the standard UPS-MIB (RFC-1628). What is the easiest way to start monitoring this device with PRTG? Are there any standard sensors or...

This article applies as of PRTG 22 I would like to monitor my EMC Isilon NAS with PRTG but there are no native sensors for EMC Isilon. How can I set up Isilon monitoring with PRTG? Monitoring EMC Isilon storages with PRTG Out of the box, ...

This article applies as of PRTG 23.x.88 I want to use Microsoft Entra ID (previously Azure Active Directory or Azure AD) as SSO provider for PRTG Hosted Monitor. How can I do this?  Important notice: The following article only applies to P...

This article applies as of PRTG 22 Want to acquire additional security when signing in to PRTG using Okta. How can I achieve this? As of PRTG 22.x.76, you can use Okta as a single sign-on (SSO) provider in PRTG with multifactor authenticat...

This article applies as of PRTG 22 In my cluster, the server running the master node crashed, and a failover node took over the master role. Since the primary master node server cannot be recovered, how can I make the current failover master...

Receiving the error message: Request timed out (ICMP error # 11010). What does this means? "Request timed out" (IP_REQ_TIMED_OUT, ICMP error #11010) means no response to the Ping attempt was received within a specified time period...

In Webserver Stress Tool, I get an error message # 10048 Address already in use. Where does it come from and how can I solve this issue? Avoiding "10048 (Address already in use.)" Errors in Webserver Stress Tool For high traffic...

This article applies to PRTG Network Monitor 12 through 15 Important note: The AVM FRITZ!Box WAN Interface sensor is deprecated as of PRTG version 16.1.23. Please see the following article for more details and possible alternatives: The PRTG...

This article applies to PRTG Network Monitor 9 or later My local probe shows a "disconnected" status. It does not recover. What can I do? Change Mac Scan Setting By default, on services startup, PRTG tries to detect all availabl...

This article applies to PRTG Network Monitor 12 or later, as well as to previous (deprecated) versions Receiving the error message: 'root\cimv2' namespace is not defined in the WMI Repository WMI Sensors: Invalid Namespace Error r...

This article applies as of PRTG 24 What can I do if the local probe is disconnected or if remote probes are not connected? Disconnected probe(s) Take a look at the following articles if you have probe connection problems: My local probe...

Using the "Windows Process Sensor" in PRTG to monitor another system. Entered the computer name, user, and password, and opened the firewall, but got the error Connection could not be established (code: PE015). How can I check the Wind...

I set up SNMP on my Linux device and confirmed it's working by testing the system uptime. However, when setting up the SNMP Linux load average, I get the error No such object (SNMP error #222). What causes this error? Is it the wrong OID? ...

I received this sensor error message (Request timed out (ICMP error # 11010)). I am using PRTG version 17.3.32.2478. Supposing that this is in the context of a Ping sensor, this means that the sensor was not able to reach the specified target....

I have 5 virtual servers. RDP sensors on 3 servers give "Connection timed out Socket Error #10060." The DC's DNS sensor gives "Connection reset by peer Socket Error #10054." Other sensors (disk space, memory, CPU, services...

Trying to auto-discover APC UPS devices but need a user ID and password to access the UPS. Is it possible to have the PRTG UPS template use an ID and password to access the devices. If you're looking for a working device template, pleas...

Some monitoring tasks require the "Remote registry Service" to be enabled. How can I do this? Enabling the Remote Registry Service Go to the services manager. Find the "Remote Registry" service Double click on the serv...

Does PRTG have a CLI interface for running 'snmpget' commands, or is there another way to perform SNMP operations from the command line on our Windows server where PRTG is hosted? PRTG has no CLI interface to check SNMP Get request. We...

After installing update KB5004442 we have an issue with PRTG. "The server-side authentication level policy does not allow the user %user% from address #### to activate DCOM server. Please raise the activation authentication level at least to...

We have several HP servers under our control. All of them are running the same ESXi version but 1 of our HP servers returns in prtg with the following message: Warning. 4 elements return a warning state: Power Supply 3 Power Supplies - unknown;...

Script that allows to execute SSH script using an EXE/Script sensor. Introduction The following script allows you to execute SSH script using an EXE/Script sensor. It will connect to the server, execute the given command and simply return ...

HTTP Advanced sensor shows the error Connection reset by peer (socket error # 10054). How can I solve this? Meaning of socket error # 10054 An existing connection was forcibly closed by the remote server or application. This normally results ...

The error message: Authorization Error (SNMP error # 16) with the sensor status being down. How can I resolve this? Please see Knowledge Base : https://kb.paessler.com/en/topic/4353-snmp-authorization-error-snmp-error-16. SNMP error # 16 (S...

While running a simple robocopy script to make a back up of a folder from the server where PRTG core is installed, this error message appeared: ERROR 1326 (0x0000052E) Creating Destination Directory NASAddress\RMBACKUP\ The user name or password ...

I have a problem with WMI connections for my server in PRTG. The Ping sensor works correctly, but the CPU Load, Memory, and Free Disk Space sensors (which need credentials) are not working, except for the CPU Load sensor. The error response is...

Out of 6 sensors 4 sensors work, but for Disk Free sensor and Memory sensor I get the report, "Connection could not be established (800706BA: The RPC server is unavailable)". Windows Firewall is off, and DCOM and WMI permissions are se...

How can I retrieve a list of usernames configured in PRTG groups and devices? The following script will give you a sortable list of all usernames configured in devices and groups, which can be filtered as necessary. Simply save it as PRTG-Get...

Important:The multi-platform probe is now stable! As such, we released the Multi-Platform Probe for PRTG manual. This article is deprecated and will no longer be updated. For the multi-platform probe release notes, see the Knowledge Base: Mul...

Applies as of PRTG 23 What are PRTG SLA Reporter, PRTG Data Exporter, and PRTG Database Observer and how may they help my monitoring? Are there user manuals available for them? Paessler PRTG SLA Reporter, Paessler PRTG Data Exporter, an...

How can I monitor vCenter alarms for items like certificate status, licensing, and services that aren't host- or VM-related? You can find a possible solution here: https://www.it-admins.com/vmware-alert-monitoring-with-prtg-and-powershell/...

This article applies to PRTG 17 or later Can I monitor the status of important notifications in PRTG to ensure they aren't paused or deleted? Monitor the Status of a Notification within PRTG (Active/Paused/Deleted) If you want to moni...

This article applies as of PRTG 23 What can I do when I run into issues with the PRTG app for desktop or PRTG MultiBoard? Are there any troubleshooting solutions? Issues with the PRTG app for desktop & PRTG MultiBoard and troubleshooti...

This article applies to PRTG Network Monitor 14.1.8 or later Can I utilize libraries in PRTG Maps to display a 'Sizeable Icon on Status Related Background' for specific sensors on devices? Sizeable Device Icon Using Specific Sensor...

This article applies to PRTG Network Monitor 17.4.35 or later I would like to add my own image to the report header. How can I do this? PRTG provides an option to change the report header image as described in this article, but note that t...

Important Information: This article is deprecated and is no longer updated. As of October 2023, PRTG no longer supports Windows Server 2012 R2. We recommend you use the most recent version of Windows Server.. This article applies as of PRTG 22 ...

This article applies as of PRTG 24 I have an on-premise PRTG Network Monitor installation and I would like to migrate to your cloud based monitoring solution PRTG Hosted Monitor. Is this possible and how can I do this? Migrate PRTG to P...

This article applies to PRTG Network Monitor 16 or later Is it possible to monitor WMI sensors if the target machine is not part of the actual domain? Monitoring WMI Sensors Outside a Domain If the server on which PRTG is installed is par...

If my master node goes offline, will there be a data gap or can it update from other nodes? How can we ensure accurate billing reports without gaps, especially if both nodes in a 2-way cluster are down at different times? Each node manages its...

This article applies to PRTG Network Monitor 16 or later I have a lot of users in my PRTG and I'd like to see who's logged in and when we reach peaks. Is that possible? Introduction PRTG can't show the currently logged in user...

This article applies to PRTG Network Monitor 14.x.11 or later How can I adjust the timeout for user re-authentication on PRTG system administration pages, or prevent being logged out from admin screens entirely? Defining the Time until Re-...

Where can I find the original GID to reconnect a freshly installed PRTG probe to its server after a hard drive failure? Is it stored on the server?  The GID of a Probe is stored in the configuration file "PRTG Configuration.dat" on t...

Receiving the error message: 209 % Delay (Interval Delay WMI) is above the error limit of 100 % Delay in Interval Delay WMI. WMI Sensors of this probe cannot be scanned in their specified intervals. Try longer intervals or distribute load over p...

How can I get WMI sensors (Disk/CPU/Memory/etc.) to work with a local account on my servers? I've ensured the account has local administrator and Distributed DCOM Users access, but I still get RPC unavailable errors. As you already have se...

Trying to create sensor for asa 5585 and i got this error:  Sensor does not get response from device. SNMP credentials are wrong or device does not support the required uptime OID (1.3.6.1.2.1.1.3.0) for traffic sensors. This OID is mandatory b...

How can I monitor components like web servers, databases, and middleware with PRTG if they don't support WMI or SNMP? Are there agents or alternative methods available? Please note that PRTG does not use agents that are typical for some ot...

I am able to retrieve the SNMP information RFC1213-mib using the SnmpB tool but when I add these variables to the PRTG I get "No such instance (SNMP error # 223) errors messages". "Get" the OID 1.3.6.1.2.1.2.2.1.8.1 using S...

How can I prevent the No Such Instance SNMP error #223 on PRTG when monitoring Dell PowerEdge servers after a reboot, without needing to delete and recreate the sensor or reset the iDRAC (While using PRTG V15.1.15.2022) Since you use an older ...

Cisco system health other ueries for the following channel IDs returned no data: 2,4 (code: PE269) How can I clear this channel indication? To resolve the PE269/SNMP 2003 errors observed when monitoring Cisco 9k devices, you can recreate the i...

Several times a day, our Perfcounter IIS Application pool sensors in PRTG show Down (Unable to connect the specified computer, or the computer is offline. (Performance Counter error 0x800007D0)). The monitored servers are running normally with n...

How can we monitor the expiration time of computer certificates on windows machines? e.g. the computer certificate from a Domain Controller.  PTF.WinCertExpiration This is possible with new Custom Sensor WinCertExpiration. This sensor return...

How can I resolve persistent WMI sensor issues with error PE015, despite all sensors working previously, no errors in the WMI tester, sensors recreated, and tried using both IP addresses and DNS names? Please have a look at the following links...

Having problem sending email notifications to an SMTP relay with authentication. My email service is Office 365 (Exchange Online) recieving this error Error sending Email": Authentication unsuccessful ("pod51028.outlook.com") Ac...

How can I monitor external temperature and humidity sensors on my APC Smart-UPS X 2000 (AP9631) in PRTG? Auto-discovery only lists the internal battery temperature, and importing the APC PowerNet MIB v4.1.9 did not help. Please review t...

This article applies as of PRTG 24 and multi-platform probe 2.0.0 Integration of multi-platform probe in PRTG Hosted Monitor instance Multi-platform probe for PRTG With PRTG 21.4.73, we introduced the multi-platform probe for Paessler PRT...

Some of our SSL Certificate Sensors show the error: Failed to establish secure connection [Step 0] Socket Error # 10061 Connection refused. [Step 1] Socket Error # 10061 Connection refused. [Step 2] Socket Error # 10061 Connection refused. [Step ...

Updating ESXi hosts to version 6.7 (or specifically 6.7 U1) might lead to warnings appearing in the Hardware Status tab of vSphere Client. These warnings might not be genuine hardware issues. Possible cause for this issue is that the upda...

How do I resolve the "SNMPERR_BAD_SENDTO (SNMP error # -12)" error when adding a sensor for physical disks on a QNAP NAS? You might have an issue on the remote probe in regards to the outgoing IP here... https://kb.paessler.com/en/t...

This article applies as of PRTG 22 In the blog article Logjam Vulnerability: PRTG Is Safe Since Version 14.4.12 (October 2014), PRTG uses pre-generated Diffie-Hellman (DH) parameters with a 1024-bit key by default. Is it possible to enhance ...

This article applies as of PRTG 22 I want to monitor via SNMP but I am not sure which sensor will give me the information I need. Is there an overview to help me find the right sensor? Important: The following article will no longer be ...

I want to change the UDP port number for the SNMP service on my Windows system. Changing the SNMP Port Number on a Windows System In order to change the UDP port number for the SNMP service on Windows systems, you have to edit the SERVICE...

I want to read (traffic) data from my device using SNMP getting an error message "Could not connect" or "Error 10060". Resolve "Could not connect" or "Error 10060" Messages when using SNMP If you want ...

Security aspects to consider when working with SNMP on Windows? Security aspects when working with SNMP on Windows Please check out these articles from Microsoft: Configuring SNMP security on Windows 2000: http://support.microsoft.com/defau...

I have a lot of WMI sensors installed in PRTG. Due to performance reasons, I would like to replace some of them by SNMP sensors. Monitoring Windows Computers via SNMP In order to use SNMP sensors for advanced monitoring of computers, please c...

I have a few devices (switches, routers and a UPS) which are able to send SNMP Traps. My intention would be to include these in PRTGs Monitoring. Is that possible, if so how to do? Important: The following information is deprecated as of...

How can I read the OID `.1.3.6.1.2.1.25.1.2.0` (hrSystemDate) from the Host Resources MIB to check device time against my secure NTP server, given that integer and string returns errors? PTF CheckTimeSNMP With Custom Sensor PTF CheckTimeSNMP ...

My WMI sensors in PRTG show errors. What tools can I use for testing things? WMI Tools Overview In order to find reasons why WMI isn't working properly on Windows computers Microsoft has published several tools for testing a lot of aspec...

Paessler Support asked me to write my Probe State or Status files, how do I do this? Create Probe Status Files In the PRTG web interface, go to Setup | System Administration | Administrative Tools. In the Probe Administrative Tools section, g...

This article applies as of PRTG 22 I have activated CloudWatch metrics in my Amazon Web Services (AWS) account. How much does it cost to use the AWS API to run Amazon CloudWatch sensors? Cost for running Amazon CloudWatch sensors If you c...

This article applies as of PRTG 19 When running PRTG on a virtual machine, for example, VMware, I encounter some performance and stability issues. Are there recommendations for settings when running PRTG on a VM? Important Notice: We do no...

I am trying to monitor an XML file via HTTP using the HTTP XML/REST Value sensor, but the sensor returns an error The server committed a protocol violation. Section=ResponseStatusLine The webserver's response is invalid. However, you can ...

This article applies to PRTG Network Monitor 14 through 17.3.33 The HTTP SSL Certificate Expiry sensors in my PRTG installation do not receive any values and show a Down status. The corresponding error message is Could not create SSL/TLS sec...

Can PRTG update a sensor name when a Cisco switch interface description changes? Currently, rescanning creates a new sensor with the updated description, which may cause loss of historical data if the old sensor is deleted. Based on the experi...

This article applies to PRTG Network Monitor 12 or later I would like to toggle the setting for NTFS compression for the PRTG data folder. Formerly, this was a setting in the PRTG Server Administrator tool. Now, that the setting is gone, how...

This article applies as of PRTG 22 What do I have to take into account when planning a large installation of PRTG? Planning large installations of PRTG The maximum number of sensors that you can monitor with one installation of PRTG mainl...

This article applies as of PRTG 22 Why does my Google Chrome browser no longer save my password for the PRTG web interface? Is this due to a PRTG change or a Chrome update? Saving PRTG passwords in Google Chrome browser As of version 37, ...

I set up an SNMP custom sensor to monitor an UPS OID. This OID will return different values for different status. Would it be possible to interpret these integer values with a description string ? It refers to the OID .1.3.6.1.4.1.318.1.1.1.3....

What is the Green IT sensor, and why was it created? What are some useful API calls that can be made on it? Not listed The Green IT sensor is always green. That's it. Please use this sensor type to brighten up your day if there are too ma...

This article applies to PRTG Network Monitor Version 12 or later, as well as to previous (deprecated) versions How can I use a WMI script to reboot a remote computer and set up a custom EXE notification with a notification trigger in PRTG? ...

This article applies to PRTG Network Monitor 7 or later I would like to receive an SMS text message notification to my mobile phone when a sensors goes down. My SMS provider is bulksms.co.uk. How can I do this? Demo 'PowerShell' No...

How can I edit a PRTG device template, to prevent auto-discovery from adding unnecessary Hyper-V network adapter sensors again after I have deleted them? Disclaimer: This is not an officially supported feature I have checked with development ...

This article applies to PRTG Network Monitor 12 or later I want to monitor more counters of APC devices—for example, APC PowerNet—than PRTG provides in its standard SNMP libraries. How can I achieve this? Monitoring Specific Counters of AP...

Why does monitoring Windows 2012 R2 Messaging Queues from the PRTG master (without a remote probe) time out, even though the Paessler WMI Tester retrieves data successfully? Are there differences between PRTG and the WMI Tester, and are there lo...

This article applies as of PRTG 20 How can I resolve issues where PRTG fails to update or install a remote probe due to an existing Npcap library on my system? Updating or installing PRTG while Npcap is running When you have Npcap 0.995 o...

The probe service just sits on stopping and you cannot force it to stop with access denied. A reboot does not allow the probe to start. Running on Windows Server 2016 There is "quick fix" explained for the issue further down, but bef...

This article applies as of PRTG 20 Is there a way to disable Npcap installation during PRTG updates or installations to avoid conflicts with other applications that use packet inspection? How to disable the installation of Npcap before upd...

PRTG has provided a value (-48dBm as signal level for our wireless link). This value appears under Message column. Is it possible to graph this value? How can I set a notification if this value goes up to -70dBm? Not Listed As for #1, yes. Th...

This article applies as of PRTG 22 Is there a way I can start over and set up my cluster configuration anew? Not Listed Clean up a cluster configuration If you got lost while configuring a cluster, this article will help you renew your c...

Are there any plans to support the SNMP Traffic sensor for devices that lack the sysUpTime OID (1.3.6.1.2.1.1.3.0), or to adjust the sensor's default behavior to work without this OID? The current workaround of creating separate in/out count...

I want to use the multi-platform probe on my Synology. How do I set up a docker container to do this? This article applies as of PRTG 24 and multi-platform probe 3.0.0 Requirements To use this guide, you must meet the following requirements: ...

When configuring PRTG channels, only Channels 5-10 appear, while Channels 1-4 (which are /24 subnets) do not show up. What needs to be changed to display all channels correctly in the Channels tab and on graphs? Not Listed The channels do not...

Keep up-to-date with the latest release notes from PRTG SLA Reporter, a PRTG extension.  PRTG SLA Reporter June 3, 2025 - Version 3.44.0.0 Changes We added support for Microsoft Windows Server 2025. Installation on a Microsoft Windows ...

Is there a recommended approach to find the problems which cause errors with WMI sensors? Can you provide a troubleshooting guide how to solve these WMI issues to get my WMI sensors working? This article applies as of PRTG Network Monitor 13 M...

Does Paessler offer formal PowerShell modules, or do they support the PrtgAPI on GitHub (https://github.com/lordmilko/PrtgAPI)? Paessler does not provide any language specific libraries for interfacing with their API; the only API available fo...

This article applies to PRTG Network Monitor 12 or later How can I use my Linux / Unix / MacOS systems in combination with PRTG? Using Linux/Unix/MacOS with PRTG There are many different ways how you can use PRTG with your Linux, Unix or ...

How do I configure PRTG to alert only for unusually high network traffic and ignore alerts for low traffic periods? There is a Feature Request Post in the KB for more granular unusual detection settings: [OPEN] Enable/Disable Unusual Detectio...

How to monitor Veeam Backup & Replication using Veeam Enterprise Manager? Note: As of PRTG 20.4.64, PRTG comes with a native Veeam Backup Job Status Sensor out of the box. PRTG – Veeam B & R Monitoring Markus Kraus of My C...

This article applies to PRTG Network Monitor 12 or later, as well as to previous (deprecated) versions Why doesn't my PRTG notification execute a batch file when triggered? I selected the batch file and left the parameter field blank, bu...