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
3 replies

Placeholders in PRTG

ip placeholders prtg

Views: 8874, on Nov 23, 2010 12:47:20 PM

0 votes
5 replies

API Channel Last Value

api channel prtg

Views: 8873, on May 18, 2011 6:58:59 PM

1 vote
4 replies

Can you update the comments on multiple sensors at one time?

comments prtg sensor

Views: 8862, on Mar 1, 2010 9:32:18 PM

0 votes
1 reply

Could not log in using the specified credentials.

credentials networking wmi

Views: 8858, on Dec 19, 2012 1:14:34 AM

0 votes
3 replies

Failed to open event query. Access is denied. Custom Query

access custom-exe denied exe-script-sensor queryevent

Views: 8856, on Jun 14, 2011 7:34:27 AM

0 votes
11 replies

Creating sensors from a PHP-FPM status page.

custom-sensor php prtg ps1

Views: 8855, on Jan 8, 2018 9:04:02 PM

0 votes
1 reply

Is there a way to monitor processes and the CPU usage or disk I/O for each?

cpu-load disk-io monitor processes

Views: 8851, on Sep 15, 2010 7:19:39 PM

0 votes
5 replies

How to monitpr Addaptec 7805

prtg raid snmp

Views: 8851, on Aug 12, 2013 1:30:07 PM

1 vote
1 reply

How can I find out what changes were applied to PRTG between versions (change log/release notes)?

changelog prtg version

Views: 8850, on Mar 3, 2010 4:42:02 PM

4 votes
6 replies

WMI NTLM Connection

authentication kerberos ntlm prtg windows wmi

Views: 8845, on Dec 28, 2015 3:50:02 PM

0 votes
13 replies

What is happening when a sensor says "session is connecting"

alarm prtg vmware

Views: 8839, on Mar 24, 2010 2:43:14 PM

0 votes
1 reply

What does "Message Queue Probe/Core" mean ?

items message-queue probes prtg

Views: 8832, on Feb 25, 2010 3:01:27 PM

0 votes
5 replies

List index out of bounds (0)

esxi prtg wbem

Views: 8827, on Nov 12, 2013 1:27:13 AM

0 votes
1 reply

How can I easily differentiate upload and download traffic with the packet sniffer?

differentiate download packet-sniffing prtg upload

Views: 8826, on Jun 2, 2010 12:56:07 PM

0 votes
8 replies

Monitoring multiple sites in a load-balanced environment

http http-sensor prtg

Views: 8826, on Feb 22, 2012 7:22:16 AM