This article applies to PRTG Network Monitor 15.4.20 or later How can I fix push notification registration for iOS devices in PRTG, given that my iOS devices don't show up under "Notification Contacts," while Android devices re...

This article applies to PRTG Network Monitor 15.4.20 or later How can I fix push notification registration for iOS devices in PRTG, given that my iOS devices don't show up under "Notification Contacts," while Android devices re...

This article applies to PRTG Network Monitor 15.4.20 or later I would like to know more about push notifications. Could you please provide details about the push notification technology and the PRTG Cloud?  FAQ for Push Notifications and t...

This article applies as of PRTG 22 How does the push notification delivery process work in PRTG, including the roles of the PRTG core server, PRTG Cloud, and mobile devices? The PRTG Cloud and push notifications As of PRTG 15.4.20, you ca...

This article applies to PRTG Network Monitor 13 or later Why does our PRTG probe create connections to an Akamai IP range when monitoring ESX hosts with VMware sensors? Connection Attempts to Akamai CDN Sensors that make use of SSL secure...

Why does the Folder sensor in PRTG fail with "Cannot access folder: The folder doesn't exist (code: PE032)" when added to a device that is not a probe, despite working WMI sensors and adjusting security settings? The folder senso...

This article applies to PRTG Network Monitor 14.4.12 or later I want to use the QOS Roundtrip Sensor with a custom target. How do I set up the PAT rules in my firewalls? How to set up a QOS Reflector with PAT What we tested out here at Pa...

How can I monitor the number of event log messages over a few hours, get alerts if a threshold is reached, and include logs not listed in the WMI EventLog sensor in PRTG? The following sensor will search multiple event logs from multiple provi...

This article applies to PRTG Network Monitor 14.x.10 or later I would like to monitor Debian based systems via the PRTG Mini Probe interface. How can I implement such a “Linux Probe”? Is there an example of how to gather monitoring data dire...

This article applies to PRTG Network Monitor 14.x.10 or later How can I monitor Java applications using Java Management Extensions (JMX) with a PRTG Mini Probe, and is there an example of gathering data directly from JMX? Important notice...

Important notice: The information in this article is outdated. Mini probes are deprecated as the OpenSSL version required to run them is out of support. You can no longer install new mini probes. Can PRTG monitor Android devices to gather s...

I used the Paessler MIB compiler to change the file to an OIDLIB file but I am not getting all the monitoring points that it should have. The Paessler MIB Importer imports only counters that provide an integer value. It cannot import double-in...

When I try to import a MIB file from the manufacturer of my network appliance, Paessler's MIB Importer terminates with a "parse error". What can I do? It depends on the kind of error you are confronted with: Missing import modul...

This article applies to PRTG Network Monitor 16 or later Why does PRTG Network Monitor v8 get stuck at "working..." after selecting a NetApp Filer MIB (ONTAP 7.3.3) library when trying to add a sensor, even after successfully impor...

I am curious if there is a way to force 64-bit PowerShell to be used by PRTG? You can also use the failoverclusters module this way. Create a custom sensor that executes a .ps1 script that contains the following line: c:\windows\<sysnativ...

This article applies to PRTG Network Monitor 17 or later I have a Kentix AlarmManager Pro device. How can I use it to send SMS text notifications with PRTG? Configure PRTG for Kentix AlarmManager-PRO Security expert Kentix offers an alarm...

This article applies to PRTG Network Monitor 13 or later I would like to use my Braintower SMS Gateway device to send SMS text notifications from PRTG over it. What do I have to do to set up this SMS gateway and PRTG accordingly? Sending P...

This article applies as of PRTG Network Monitor 18 How can I integrate my SMSEagle Hardware SMS Gateway with PRTG for reliable SMS notifications, and is it possible to monitor the SMS gateway with PRTG? Sending PRTG Notifications via SMSEa...

How can I use remote probes in a PRTG cluster setup? Can they connect to any node, and what happens if the connected node fails? The 15.2.17 stable version offers cluster support for remote probes! This feature is also available in the stable ...

This article applies as of PRTG 22 Are there any recommendations or guidelines what to do if PRTG crashes and it is not possible to restart the program? Guideline for reacting to PRTG crashing If PRTG crashed and you cannot restart it any...

When using a device template for autodiscovery on a new VMware server with the same setup, all sensors configure correctly except for the NICs. How can I ensure only BCK and FRT NICs are detected as per the template? If you are using SNMP Traff...

Is it normal for auto-discovery on switches to add interfaces that are administratively disabled or have no active link? What are the conditions for auto-discovery to add an interface, and can these be adjusted? The auto-discovery always creat...

When I discover a switch it only finds the UP ports, is there a easy way to find them all from stage one, rather than doing a new discovery now and then ? New interfaces will initially be created if the traffic counters are not zero. If the po...

I would like to setup the system to enable connection state handling of all interfaces during the autodiscovery process. Any ideas how I can do that? You can do this by creating a device template yourself, from a device with one SNMP Traffic S...

This article applies to PRTG Network Monitor 15.4.20 or later How can I set up the Business Process sensor in PRTG with a sample use case, such as monitoring my website backend? Monitoring the Business Process “Website Back End”: A Use Cas...

How to prevent .js files to fill up in this location: C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5 ?  Unfortunately, this is a known issue of the Internet Explorer, which PRTG pot...

How can I use PRTG to check if my device's IP address is listed on blacklisted servers like sbl-xbl.spamhaus.org, bl.spamcop.net, dnsbl.njabl.org, list.dsbl.org, and multihop.dsbl.org? [UPDATE] Native sensor available: IP on DNS Blacklist ...

This article applies to PRTG Network Monitor 15.3.18 or later The SNMP Printer Sensor shows error "No such object" (SNMP error # 222), what can I do to monitor the fill level of toner cartridges? How to Monitor the Fill Level of ...

Applies to PRTG Network Monitor 15.3.18 and later Can I create a SNMP Custom Table sensor with the same configuration on another device using a template in PRTG? Using SNMP Custom Table Templates Yes, you can create a template from your S...

This article applies to PRTG Network Monitor 7.x I would like to monitor whether my PHP web server is in a good condition. Is there a way to do this? Using phpSysInfo to Monitor the System Health of a PHP Web Server With PRTG Using script...

This article applies to PRTG Network Monitor 14 or later, as well as to previous (deprecated) versions How can I share the status of my network with others, e.g. other departments or management, without disclosing security sensitive data? ...

This article applies to PRTG Network Monitor 12 or later I used the "Send SNMP Trap" notification of PRTG. Is there a MIB file available that I can use on the receiving device? PRTG MIB File You can find the PRTG MIB file in the...

This article applies to PRTG Network Monitor 13 through 16.2.23 When trying to monitor SSH sensors, I get the following error message in PRTG: The negotiation of encryption algorithm is failed. What is the reason for this problem? What can I do?...

This article applies to PRTG Network Monitor 7 or later Is it possible to change the port PRTG uses for its report generation? It seems to interfere with VMware Infrastructure clients (or some other software) on my PC.     Changing the por...

How can I view the last response string of a custom string sensor in PRTG for processing, and how can I test string processing to see the output based on the input and defined processing? If you create a SNMP Custom String sensor that monitors...

Why does retrieving the battery charge value from a Synology NAS DS413's APC Back-UPS work with iReasoning MIB Browser but fail with Paessler SNMP Tester and PRTG, showing a NAN (Unknown data type) error? As of 05/08/2015 PRTG is able to n...

Especially for automatic installation, what command line parameters do you provide for your setup routines, such as PRTG etc.? Which exit codes are given back from the setup files? Command Line Parameters and Exit Codes for Paessler Setups Se...

Are there plans to introduce a PRTG sensor similar to the HTTP XML/REST Value Sensor that can read and monitor JSON output from RESTful web services? Checking JSON With the XML Node (and optional property) field of the HTTP XML/REST Value sen...

How can I enable the auto-discovery log file in PRTG to troubleshoot why a "Windows Updates Status (PowerShell)" sensor isn't created, while SNMP sensors are? Please begin by locating your PRTG's Data Directory on your Core S...

This article applies to PRTG Network Monitor 17.x.34 or later I want to create PRTG libraries to get my own, individual views of the device tree in PRTG. Is there a best practice to help me getting the most out of the libraries feature? Be...

Important note: The option to choose Clickatell as service provider for SMS delivery is deprecated! Clickatell changed the API that PRTG uses to send SMS text notifications, so it is not possible anymore to choose Clickatell as service provider ...

What does the "other" entry in the TopConnections and TopTalkers Toplists mean in PRTG NetFlow or sFlow sensors? The 'Other'-entry is basically the summed rest of all Toplist items beyond the limit of a Toplist. For example t...

Important: The PRTG Data Extractor has been discontinued. There is no further development planned for this freeware tool. You can still use it but we do not provide support for it anymore. We recommend you check out the Paessler PRTG Data Export...

How can I troubleshoot the Could not create the sensor IPMI System Health BETA on the device xxx. The login has failed. Make sure that you entered the correct user name and password. (Code: PE221) error in PRTG, even though the username and passw...

This article applies to PRTG Network Monitor 8 or later The Paessler support team asked me to send my log files. What's the easiest way to do this? Important Note: As of PRTG Network Monitor version 13.3.6, PRTG provides an even easier...

This article applies to PRTG Network Monitor 13.2 or later Sometimes the probe in my PRTG installation restarts and I do not know why. What reasons are there for these occasional restarts of the probe Windows service and/or of the entire mac...

This article applies as of PRTG 21 I would like to install and use a GoDaddy SSL certificate in order to avoid the web browser security warning when starting PRTG’s web interface. How can I achieve this? Using a GoDaddyGeneral SSL Certific...

This article applies as of PRTG 21 I would like to install and use a DigiCert SSL certificate in order to avoid the web browser security warning when starting PRTG’s web interface. How can I achieve this? Using a DigiCert SSL Certificate w...

This article applies to PRTG Network Monitor 16.3.25 or later How can I set up additional sensors in PRTG for my APC UPS to ensure immediate alerts if anything goes wrong, beyond the default monitoring? Advanced Monitoring of APC UPS Syste...

I have a new APC with an expansion card with sensors in it. How do I connect those sensors in PRTG? They are a remote Humidity and Temperature sensor. Update: We have now published a device template for Advanced metrics on APC equipment that i...

This article applies to PRTG Network Monitor 17.4.35 or later I have just installed PRTG and there are aspects in the web interface that I would like to modify. Can I modify the web interface and other aspects of PRTG? Note about Customizi...

This article applies to PRTG Network Monitor 7.2 - 7.3 How can I monitor environmental sensors connected to an "Ethernetbox" using PRTG? Using PCMessure Ethernet Box with PRTG Network Monitor With PRTG Network Monitor, you can e...

Has anyone integrated the ENVIROMUX-MINI-LXO with PRTG for temperature monitoring? If so, how was the experience? Alternatively, any recommendations for other temperature monitoring devices compatible with PRTG would be appreciated. There are ...

Can PRTG's API retrieve historical data for multiple sensors and channels in a single API call? No, PRTG's current API requires you to query each sensor individually for historical data. It does not support fetching data for multiple se...

This article applies as of PRTG 22.2.76 What is the "Activate New UI And New API (Alpha)" banner in the setup settings of the PRTG web interface and how can I hide it? How to hide the “Activate New UI And New API (Alpha)” banner ...

Why can't I restart a remote service from PRTG 7.2.4.5051 on a Windows 2008 R2 server, even though manual execution works fine? The issue might be related to permissions, especially since the notifications folder is under Program Files. PT...

I have a new APC with an expansion card with sensors in it. How do I connect those sensors in PRTG? They are a remote Humidity and Temperature sensor. Update: We have now published a device template for Advanced metrics on APC equipment that i...

Can I use `ipt-netflow` on Linux to forward NetFlow traffic to PRTG? If so, what steps are needed on both Linux and PRTG? I'm afraid we don't have any experience with this, but you can use our Netflow Testers to assist with testing. ...

This article applies to PRTG Network Monitor 13 or later Why is my ESX hardware sensor in PRTG showing a "162 elements not found" warning? No changes were made to PRTG or VMware. What can I do to fix this? Checklist: “Not Found” ...

This article applies to PRTG Network Monitor 9 or later, installed on a 64bit OS Can I use the 64bit version of Powershell in an EXE/Script Sensor in PRTG? How to Use 64bit Powershell with EXE/Script Sensors The short answer is: Yes, you ...

What's the best way to migrate PRTG from an XP workstation to a new Windows 2008 server, with the program and data files on different drives? Should I back up the data from C on the old system and restore it to D on the new server after insta...

This article applies to PRTG Network Monitor 14 or later I would like to monitor ingress and egress traffic on a port separately. How do I get individual data for inBound and outBound traffic with PRTG? Separating Ingress and Egress Traffi...

This article applies to PRTG Network Monitor 17.4.35 or later Is it possible to modify the header and footer in reports? For example, to add comments or my own custom files? Changing the Header and Footer in Reports In the PRTG web interface...

This article applies to PRTG Network Monitor 17.4.35 or later Is it possible to change the order of the elements in a report? How can I do this? Changing the Order of Report Elements You can reorganize, remove, or modify elements in repor...

This article applies to PRTG Network Monitor 17.4.35 or later I would like to change the size of graphs in reports. How can I do this? Changing the Size of Graphs in Reports Graphs are added to reports as include files. To change the appe...

This article applies to PRTG Network Monitor 17.4.35 or later I would like to have a smaller number of sensors in a report. How can I do this? Changing the Number of Sensors in Reports PRTG comes with report templates for the top 10 or to...

This article applies to PRTG Network Monitor 17.4.35 or later I want to have a report without page breaks. How can I do this? Deleting Page Breaks in Reports By default, report templates have page breaks. You can remove page breaks, for e...

This article applies to PRTG Network Monitor 17.4.35 or later In PRTG, when creating PDF reports, how can I prevent them from being split into separate PDFs? With my reports, I end up with five PDFs, each under 500 KB and would rather have o...

This article applies to PRTG Network Monitor 17.4.35 or later I want to cut parts from my reports, like the data table and the 30-day summary graph. How can I do it? It is possible to modify report templates. Report templates use multiple ...

This article applies as of PRTG 22 Where can I find additional metrics for the Google Analytics sensor in PRTG beyond those available in the default sensor settings? Where to find Google Analytics metrics See Dimensions & Metrics Expl...

After upgrading to PRTG version 16.3.25.6124+, the new SSL Certificate Sensor gives a "Socket Error # 11004" when monitoring sites. The old HTTP SSL Certificate Expiration sensor worked fine. Please note that the HTTP SSL Certific...

Why can't I see disks when adding the "SNMP Linux Disk Free" sensor in PRTG, despite using the Host Resources MIB in SolarWinds? I want to avoid manually creating sensors for each disk. In order to monitor SNMP-based Disk Space s...

This article applies as of December 2023 I use the SLA Plug-in, Data Pump Plug-in, or the DB Plug-in from CORP-IT. Now that Paessler has acquired ITPS, what is going to happen to these plug-ins? Is there anything I should do? Note: This...

This article applies to PRTG Network Monitor 13.2.3 or later We want to create a map in PRTG that displays just the sensor reading with units, without extra text or names. The current templates don't meet our needs. Can we customize or c...

How can I increase the font size of the alarms table in a PRTG map embedded via iFrame, since the default font is too small and I couldn't find a clear option in the CSS files? It is possible to add the font size directly to a map object. ...

When running PowerShell script to restart a service via PRTG, you encounter the error: "Error sending 'EXE': File 'Powershell.exe' not found." PowerShell 3.0 is installed on the PRTG server. Do I also need to install Pow...

As check result on any snmp sensor on the core-switch PRTG reports: Error opening snmp session: Unknown host (10.9.1.1:161) (SNMP error # -2006). Tried to run snmp tester from probe machine and it reports no result. If not even the SNMP Teste...

I configured SNMP traffic on the Fortigate WAN interface for PRTG, but I get the error:  "No response (check: firewalls, routing, snmp settings of device, IPs, SNMP version, community, passwords etc) (SNMP error # -2003)" First of all...

After updating to PRTG 25.1.104, the PRTG core server does not start anymore, and the log contains the following message: Signature of \Program Files(x86)\PRTG Network Monitor\32 bit\PRTG Server.exe is not valid What can I do to resolve the iss...

Is there a guide I can follow to migrate my PRTG Data Pump or PRTG SLA Plugin data to the PRTG Data Exporter or PRTG SLA Reporter extensions? What about my PRTG DB Plugin data? This article applies as of January 2025 Migration Guides  If y...

This article applies as of PRTG 25 Sensor Migration What is a sensor migration? Long-term PRTG users may have noticed that we have recreated multiple existing sensors and marked them as “v2”. Sensor technologies are constantly updating and, i...