This article applies as of PRTG 22 Why is the map background missing in my PRTG Geo Maps, even though monitoring objects like devices and groups with defined locations show up with their icons? What steps can I take to ensure the geographica...

I can't seem to find where I set the community string for an SNMP monitor. You won't find this under Setup because Setup refers to PRTG's setup itself and other global settings. The SNMP Community is considered a credential and as ...

Is it possible to permanently delete a channel from a sensor so the data is no longer stored? Once they are created, single channels cannot be removed from a sensor. They can, however, be hidden in graphs and tables. You can choose which chan...

This article applies as of PRTG 14 We need to move a remote probe in PRTG Network Monitor from an old server to a new server while retaining all sensors and historical data. How can we do this, and what are the procedures? Moving a Probe ...

Its possible to create a dashboard on GRAFANA using data from PRTG? if yes, how can I do it? Yes, it is possible, the PRTG data source has been updated with improvements and fixes by its developer (a user called Neuralfraud on GitHub). Ple...

How can I import over 500 devices from a TXT or CSV file (with name and IP) into PRTG and add them to an auto-discovery group? Although there is the option to simply copy the entire IP column from the CSV and create a new auto discovery group....

I am stuck trying to configure Cisco devices with SNMP v3. Can you give me any insight into SNMP v3, background information, or tutorial? We can recommend this CBT Nuggers video for an SNMP v3 tutorial:  http://www.youtube.com/watch?v=YZ5g...

This article applies to as of PRTG 19 as well as to previous (deprecated) versions PRTG includes hundreds of map icons for use in maps. I want to add my own custom image (our corporate logo). How can I do this? Use your own images in PRTG ...

Is there a way to export a list of devices from PRTG, including their hierarchy (Probe, Group, Sub-Group, Device)? To export a list of the devices configured, you can use the following API call: https://PRTGSERVER/api/table.csv?content=de...

This article applies as of PRTG 24 With PRTG 20.3.62.1397, x64 received an error: 1,000 % Delay (Interval Delay WMI) is above the error limit of 100 % Delay in Interval Delay WMI. The issue is related to PRTG not having access to the servic...

This article applies as of PRTG 24 I accidentally set a One-Time Maintenance Window for a server to 1 week, causing the status to remain PAUSED. How can I resume the sensor? To resume the one-time-window, navigate to the object where it was s...

This article applies as of PRTG 24 I am trying to export a list of devices that are in PRTG. How can I do this? This can be done using PRTG's API: /api/table.xml?content=devices&output=csvtable&columns=device,host It will retur...

This article applies as of PRTG 24 Is it possible to add PRTG to an existing Open LDAP instance so that it gets its users from there? It is not currently possible to connect PRTG to an Open LDAP Software.  If you are interested in seeing ...

This article applies as of PRTG 24 I have reduced the log file retention via system settings. However, I am very close to being out of disk space. How can I manually force the purging or deletion of log files? You can adjust the settings for ...

This article applies as of PRTG 24 After a scheduled reboot, specific performance counters for a local drive on a server monitored by PRTG Network Monitor stopped working, resulting in the error "Instance(s) not found (code: PE236)." T...

This applies as of PRTG 24 Can the SSL sensor or another send warning alerts for pending expirations (in x number of days) and expired certs? Please have a look at the following: Monitoring SSL Certificates with PRTG You are going to need...

This article applies as of PRTG 17 I want to protect my server room equipment and data from high temperatures or humidity. How can I set up PRTG to notify me immediately by email, SMS, or pager when these environmental factors become abnorma...

This article applies as of PRTG 24 My sensors intermittently show "Connection could not be established (80070005: Access is denied - Host: server.domain.com)." Pausing and restarting the sensors resolves the issue temporarily. How can ...

This article applies as of PRTG 24 We are receiving the above-mentioned error while PRTG is monitoring for CPU Usage. How can we resolve this issue? 80041010 – The specified class is not valid This is quite an ambiguous message, as there can...

This article applies as of PRTG 20 I want to use placeholders (variables) with PRTG when editing Notification Templates (email, SMS text messages, execute program, etc.), or in the Send Email options. What placeholders are available with PRT...

After a few months after a PRTG update, I frequently receive false ping errors on PRTG, although I can ping the hosts directly from the PRTG server without issues. The errors usually resolve after 10-15 minutes. You can usually resolve this is...

This article applies as of PRTG 24 I imported the Cisco MIBs for monitoring client associations on the 5508 controller. However, when adding a sensor in PRTG, only generic SNMP and RFC sensors are available, and none of the Cisco sensors appear....

This article applies as of PRTG 18 When displaying maps in Google Chrome, the browser crashes after a while, but reloading with F5 fixes it temporarily. This issue doesn't occur in Firefox or other browsers. Why does this happen, and how...

This article applies as of PRTG 24 Is it possible to receive notifications regarding my PRTG network on my WhatsApp? There are no plans of supporting WhatsApp notification at the moment. The main reason behind this being, that 3rd party clien...

This article applies as of PRTG 24 When creating a C# console application that returns values via exit codes, encountered issue where PRTG Network Monitor misinterprets these exit codes. Using return in the Main method does not guarantee the cor...

This article applies as of PRTG 24 I cannot monitor the CPU Load of Ubuntu PC via SNMP. I activated SNMP and SNMPd and the firewall is disabled on both PCs. What should I do now? Installing SNMP and SNMPd is not enough, you also need to do so...

This article applies as of PRTG Network Monitor 17.4.35 Is there a way for me to change the "theme" of PRTG ? I need to run it on a large plasma display, but the white background causes very bad flickering when in peripheral vision....

This article applies as of PRTG 24 Getting this error when trying to add SNMP-Traffic sensor to a switch The sensor does not get a response from the device you want to monitor. The reason might be that the SNMP credentials are wrong or that the...

This article applies as of PRTG 24 Setting up SMTP Delivery to use gmail PRTG v13 log show error: Error sending "Email": Connection failed ("smtp.gmail.com") After testing the PRTG Mail Delivery using Google Apps (aka...

This article applies as of PRTG 24 I'm trying to monitor my Canon printers using SNMP, but I get No response (SNMP error # -2003). A basic SMTP sensor works fine. Both use the same strings. What should I check? You need to set it to SNMP...

This article applies as of PRTG 24 Trying to add a hikvision camera on PRTG. I have upload the MIB file with the Importer but how can configure the community String? Please make sure that your device has enabled SNMP already and you have con...

This article applies as of PRTG 24 Running PRTG version 18.4 and upgrading to the latest version want to know the steps or suggestions First of all, with the latest version, we just changed the updating process a bit if you update from an old...

This article applies as of PRTG 24 PRTG licensing is measured by so-called sensors. To purchase the license that fits my needs, I would like to know: What is a sensor? How many sensors do I need for my infrastructure? What is a sensor in P...

This article applies as of PRTG 24 Since switching to Beyond Trust, our WMI sensors in PRTG have stopped working. The PRTG user is in Distributed COM Users, Remote Management Users, and Service Admins groups. Does it need to be in any other gro...

I'm trying to receive SNMP data from HP iLO2 for server metrics (fan, RAID, temperatures). When adding an SNMP Library in PRTG, I get No available interfaces on this device (code: PE049). The MIB imported without errors. How can I fix this? ...

This article applies as of PRTG 22 Wrote my own script or program and created a new custom sensor, new custom notifications, or a new website styling for PRTG. How to share my code with other PRTG users?  PRTG Sensor Hub We collect free u...

How can I accurately monitor UPS runtime remaining using the "ups adv battery run time remaining" in PRTG with an ACP network interface card? The reported values seem incorrect, showing 1,200,000 instead of the expected 3 hours and 20 ...

Setting up an SNMP Trap Receiver sensor for my NetApp on port 162, but I'm getting a Could not open port 162 (code: PE245) error. The NetApp is reachable from the PRTG system, and the firewall is disabled. The problem can be in some OS ser...

I want to count backlog files on a host. The script works fine in a PowerShell window for both my user and the PRTG service user. But, when I run it through PRTG as a custom EXE/Script sensor, the module loads but the functionality doesn't w...

How can I monitor the number of active Terminal Server sessions on a Windows Terminal Server? In current PRTG versions, there are two dedicated sensors available out of the box for this purpose: WMI Terminal Services (Windows 2008) sensor ...

Why is my PRTG sensor failing to connect to an MPLS location, even though the trial version works and other SNMP locations are accessible? Firewall is disabled, UDP 161 is open, version, IP address, and community string are correct. Common SNM...

How can I monitor IBM Storwize 7000 with PRTG, given that I have difficulty with Perl and can't find clear documentation on the XML performance files? PREREQUISITES: Create a keypair with puttygen. Place the privatekey in c:\sanmon Create ...

Windows Update Status sensor reports "Last Message" as "No such host is known". Is this message delivered by the target device where I want to know the update status from? Or does this mean that PRTG cannot find the host? M...

What issues might arise if I change the IP address of my PRTG core server, and what will happen to my license? You could have problems, but don't have to. The easiest way is to do this: Log in via RDP to your PRTG core server Stop PRTG ...

Is there any way to clean up the monitoring database (.prd files) of PRTG? You could change the directory where PRTG stores its data or you can use the purging limits see: https://www.paessler.com/manuals/prtg9/system_website_settings.htm ...

Recieving the following error for our Veeam Sensor Script: "XML: The returned XML does not match the expected schema. (code: PE233) -- JSON: The returned JSON does not match the expected structure (invalid JSON). (code:PE231)" Y...

How can I set up a sensor on my FortiGate WAN interface to show an alarm when my ISP is down, even if the interface is up? There will be a target service which the users are working with. You can create sensors to simulate the working routine ...

How do I disable the revocation status check for SSL Certificate sensors in PRTG when monitoring internal/private certificates with a probe that lacks internet access? In order to disable the check, click the small gear in the Revocation chann...

When will PRTG support some kind of option to monitor Kubernetes so the NODE thresholds can be shown in PRTG? I'm afraid that we do not have such plan in the near future. Please find our roadmap within the following link: https://www.pa...

Despite configuring SNMP settings on both the PRTG core server and client side, and allowing port 161 through the Windows Firewall, SNMP communication still fails. Should I allow additional ports for Windows Firewall compliance? If you're ...

In what database type is PRTG stored? Is that MySQL, Microsoft SQL or does PRTG uses its own system? It's a proprietary database format, somewhat similar to RRDTool. There is no way to change this. Disclaimer: The information in the P...

Getting this error on all WMI sensors for a new VM I created recently. This VM is a clone of another VM which has no PRTG sensor issues. The error here is related to security issues directly in PRTG or the target Windows. It's an error-mes...

I am trying to use PRTG to monitor the number of "current connections" on a single virtual server on the F5 Big-IP's using SNMP. How to do this? The BIG-IP MIB file can be found by logging into the command line interface (via SSH...

I'm setting up PRTG with single sign-on (SSO) but get an error on the login page saying, The URL you are using to connect to PRTG is not enabled for single sign-on, contact your PRTG administrator. How can I fix this? The callback URL must...

Receiving the following error: Nonauthoritative host not found.  This error may suggest that the name service itself is not functioning.  Socket Error # 11002 (socket error # 11002). What does this means? This means that the host name used in ...

I am looking to update a PRTG core server and over 10 remote probes. Does this update require a reboot? How do the remote probes get the update, and where do I see if they actually updated/current version of the probes? Whether or not an updat...

This article applies as of PRTG 22 When using the PRTG web server, a popup appears that displays Lost connection to PRTG server! and I cannot continue. This error has the code PE1114. What does this mean? Connection issues: Error code PE11...

This article applies as of PRTG 15 I want to send notifications about alarms in PRTG to the messaging app Slack. How can I do this? Note: As of PRTG 18.3.42, PRTG comes with native Slack integration out of the box. Sending notifications ...

Why are some App Pool sensors in PRTG reporting errors even though all application pools are running fine and the Remote Registry service is running? The following script will act as a workaround for the native sensor, which sometimes has conn...

We're receiving persistent PRTG alerts for the VMware Host Hardware Status (SOAP) sensor on our VMware ESXi hosts, with the error message Error. 1 element returns an error state: Memory. How can we resolve this? It may be that the ESX host...

Is there a way to export PRTG reports in CSV format? Currently, I only get PDFs and manually input data into Excel. Would the csvexport tool help, and where do I install it? If you choose a report template where data files are available, it...

How can I attempt an integration of PRTG with ServiceNow? The integration is documented in the ServiceNow Manual.  The restriction of how many messages are getting polled needs to be defined in their API. So I recommend to reach out to the...

This article applies to PRTG Network Monitor 12 or later, as well as partly to previous (deprecated) versions How can I temporarily disable notifications for specific devices in PRTG during a maintenance window, like when installing Windows ...

We have to change the hostname of our PRTG server. Is this possible "on the fly"? What changes have to be made in PRTG? In current PRTG versions, you can change PRTG Site Name and DNS Name, as well as the IP Address for Web Server in...

Trying to use 'Direct delivery using built-in email server' to email notifications and getting error. How to resolve this ? This can be resolved by using the SMTP option and pointing it to the Office 365 environment. Disclaimer: T...

Can I use PRTG Network Monitor to schedule the pausing of monitoring for groups of devices at the same time every day, rather than setting up individual device schedules? You could add a schedule to the group that happens daily and the whole g...

I want to install SNMP software on my Linux / UNIX distribution. SNMP daemon on Linux machines Suitable SNMP software and instructions should be available from the vendor of your Linux distribution. SNMPD from the Net-SNMP project is very c...

Sensor shows the state of the ESXi server (6.7), and the sensor status are Warning with following message: Unknown. 327 elements return a unknown state: CPU2 Level-3 Cache; CPU2 Level-2 Cache; CPU2 Level-1 Cache; CPU1 Level-3 Cache; CPU1 Level-2...

I can't seem to log in to my web and Windows GUI. How to reset my admin password? Credentials for the PRTG web interface In a new installation of PRTG, the default credentials of the PRTG System Administrator user for the login to the PRT...

I'm receiving a 91 d (Age of Code) is above the warning limit of 90 d in Age of Code message on my Core Health sensor. How can I download and install the latest version, considering my current version is 19.2.50.2842 and auto-update finds no...

This article applies to PRTG Network Monitor 16.3.25 or later Our organization runs a Check Point as firewall/router. Is there any way to obtain meaningful information from the appliance using PRTG? Are there built-in sensors I can use? Mo...

How can I disable alerts for low traffic conditions in my monitoring system while still receiving alerts for high traffic or other significant issues? We have customers with very different needs. There are many options for customization in ord...

I'm experiencing SNMP monitoring issues with my Mikrotik router on PRTG. The error message is: "No response (check: firewalls, routing, SNMP settings of device, IPs, SNMP version, community, passwords, etc.) (SNMP error # -2003)." ...

This article applies to PRTG Network Monitor 12 or later, as well as to previous (deprecated) versions How do I configure PRTG for Linux and Unix? I added a device for a Linux system in my PRTG web interface successfully. But now I need help...

This article applies to PRTG Network Monitor 9 or later How can I monitor running processes on my Linux machine? Monitoring running processes in Linux Prerequisites Installed and configured NET-SNMP In some cases, it might be useful t...

This article applies as of PRTG 22 My PRTG installation has around 100 EXE/Script sensors with a one-hour scanning interval, all using the same mutex and each running for about six seconds. However, they all scan simultaneously, causing the ...

Tried to monitor the Uptime of a MySQL database with this query Show status like 'Uptime'. But I get the error message 'Could not convert variant of type (UnicodeString) into type (Double)' As the PRTGToolsFamily user confirme...

I am trying to monitor my Hyper-V clusters via WMI with PRTG. This worked with IP Network Host Monitor for querying root\MSCluster, but not for PRTG WMITool.exe, which return the error: 80041003: The current user does not have permission to perfo...

Switches all of a sudden got an alert on its HTTP sensor stating: Error connecting with SSL. EOF was observed that violates the protocol Have you checked that it is not a key length issue? New browser (and MS) security requirements enforce SSL...

Custom Perfmon counter fails. It showed a working value for a few short periods but other than that it shows an error. A workaround for this is to restart PRTGProbeService on the PRTG core server, which should solve the problem. Disclaime...

To monitor the system information available in the iLO which port(s) should be allowed on the target machine in order to communicate with PRTG? First you need to enable SNMP on the iLO and then use SNMP sensors. Please take look at the sensor...

My Win19 server's system logs are full of event ID 10036 errors. How to resolve this issue? This is currently a bug which is caused by the windows update KB5004442. Our developers are currently analyzing this issue already. In the meantim...

Looking for a way to back up network device configurations nightly. Can I do this anyway with PRTG? Cacti and Nagios are both using plugins and it's the same way for PRTG. It should be even easier, since you can use kron on the Cisco appli...

How to receive PRTG notifications via Telegram? We now have an official blog-post with a set-up guide for Telegram: How To Receive PRTG Notifications Via Telegram Disclaimer: The information in the Paessler Knowledge Base comes without...

This article applies to PRTG Network Monitor 17.1.28.1341 or later After updating PRTG as of 17.1.28.1341, many WMI sensors in my PRTG installation suddenly show the Down status. They also show the error code PE263. How to resolve this issue...

This article applies to PRTG Network Monitor 17.1.29 or later After updating PRTG to version 17.1.29, an SSH sensor on a specific Linux device is in down status in my PRTG installation with this error message: Failed to read password prom...

I have added a new Dell PowerEdge T430 iDRAC 8 to our monitoring system. We get the following seemingly spurious error (no Errors reported on iDRAC logs): Error by lookup value 'Other' in channel 'Cooling Unit Status' Cooling ...

Important: The multi-platform probe is now stable! This article is deprecated and will no longer be updated. For the multi-platform probe release notes, see the Knowledge Base: What are the release notes for the multi-platform probe?  See the M...

How can I set up sound alerts for PRTG? Note: Please find information about audible alarms for current PRTG Network Monitor versions in the article Which audible notifications are available in PRTG? This article applies to PRTG Network Moni...

This article applies to PRTG Network Monitor 16.3.25 or later Can I monitor Juniper devices running JunOS with PRTG? How can I monitor the status of the Routing Engine and other components, including Buffer Pool Utilization, CPU Load, DRAM S...

I would like to know how can I add a sensor (a WMI Process sensor, for example) for all devices that are already discovered within a group? The fastest method would be to clone the sensor in case: Cloning is available for groups, devices, and...

This article applies as of PRTG 22.4.82 What do I have to do if I want to activate the new UI and API v2 of PRTG? What are the requirements? Where can I find frequently asked questions? The new UI and API v2 of PRTG With PRTG 21.4.73 we i...

By default, the port used on remote probe is 23560. I would like to know if, when the remote probe is behind a firewall, I need to open port 23560 on my firewall´s rules, and which direction. Both directions? Yes, you need to open port 23560 fo...

How can I count the access points (APs) connected to a Cisco Catalyst 9800 WLAN Controller using PRTG Network Monitor? Please see this article: https://kb.paessler.com/en/topic/89669-cisco-catalys-9800-wlan-controller-ap-counting User...

This article applies as of PRTG 23 Using the Active Directory Replication sensor, I always get an error Replication access was denied Even running the sensor with domain admin credentials gives me this error. How to enable access for the A...

I want to grab historic data for all sensors relevant to the account, and be able to identify which sensor that data is associated with. Is there a property that can be added to the historic data API call to return the object ID or sensor name? ...

This article applies to PRTG Network Monitor 18.1.37 or later I use Palo Alto devices in our IT infrastructure and would like to monitor them in an easy way without adding each single sensor manually. How can I monitor my Palo Alto firewalls...

Forgotten password for prtgadmin account. How can I reset it? Please see PRTG Web Interface and Windows GUI Login Information Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your o...

As a PRTG user, is there any way to use two-factor (2FA) authentication with PRTG in order to secure the login process? The support for Microsoft Entra ID (previously Azure Active Directory) as authentication provider first is implemented. ...

Is there a way to export devices and their sensors into an Excel-supported format (like CSV) or a uniformly formatted plain text file? The only way to create such list would be the PRTG API. The documentation and also a query builder for API c...