What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags


View all Tags

Knowledge Base overview

This is an overview of some of the topics. You can view other topics grouped by, activity, hottest, important, newest, views, votes.

0 votes
24 replies

Total user count RDS Windows 2016

custom-sensor mx-records powershell prtg

Views: 10104, on Jan 8, 2019 1:20:27 PM

0 votes
3 replies

snmp Memory usage - difference between virtual memory and physical memory ?

memory physical-memory snmp snmp-sensor usage virtual-memory

Views: 10102, on May 4, 2017 8:36:42 AM

0 votes
5 replies

SNMP error 222

error-#222 no-such-object snmp

Views: 10090, on Jun 22, 2020 12:33:13 PM

0 votes
5 replies

Can PRTG communicate with MODBUSS or bacnet devices?

bacnet modbus serial

Views: 10086, on Jul 12, 2012 2:56:18 PM

0 votes
5 replies

Does PRTG Network Monitor snmp v3 support hmac-md5, authenication type?

ibm prtg snmpv3

Views: 10086, on Nov 26, 2010 5:48:59 AM

0 votes
4 replies

Error PE018 with new sensor type "Windows logged in users"

pe018 prtg wmi

Views: 10086, on Mar 14, 2011 11:53:41 AM

0 votes
1 reply

Installing multiple PRTG servers on same site

license prtg software

Views: 10084, on Mar 22, 2010 12:25:14 PM

0 votes
1 reply

NTML authentication doesn’t work. What can I do?

apache authentication linux ntml prtg unix webserver windows-7

By Gerald Schoch [Paessler Support]
Views: 10075, on Aug 6, 2013 2:09:08 PM

0 votes
1 reply

How can I secure the PRTG core server–related information stored in the Windows registry?

access-rights administrator prtg registry security

Views: 10067, on Nov 21, 2019 8:22:20 AM

0 votes
2 replies

Howto Log incoming VPN Connections Windows Server 2012

incoming logging prtg vpn

Views: 10061, on Feb 26, 2014 10:04:30 AM

0 votes
27 replies

Is there a way to see when all users logged in the last time?

active login powershell prtg prtg-login ps1 users

By Dariusz Gorka [Paessler Support]
Views: 10059, on Feb 10, 2017 9:49:38 AM

0 votes
1 reply

Monitor Web sites visited

packet-sniffer web-sites web-traffic

Views: 10056, on Dec 20, 2011 2:53:23 AM

0 votes
1 reply

Adding a Sensor from a Netgear Switch

netgear sensor snmp

Views: 10054, on Jan 30, 2012 7:56:45 PM

0 votes
12 replies

Monitor Shadow Copies age

age shadow-copy windows

Views: 10053, on Jun 22, 2015 1:37:23 PM

0 votes
1 reply

Thread creation error: Not enough storage is available to process this command

error error-messages probe probes threads

Views: 10048, on Mar 6, 2015 2:56:31 PM