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

Show a live sensor value on a webpage

html prtg web-page

Views: 9504, on May 28, 2010 8:19:19 AM

0 votes
1 reply

Fortigate VPN ipsec tunnel monitoring

fortigate green status vpn vpn-tunnel

Views: 9503, on Feb 2, 2018 4:17:59 PM

0 votes
3 replies

SSL Cert for PRTG

check-pasword core-server could-not-load-key ssl

Views: 9497, on Feb 24, 2012 6:20:47 PM

0 votes
1 reply

how can i delete old logs automatically?

eventlog logs prtg13

Views: 9496, on Jul 2, 2014 8:33:03 AM

0 votes
6 replies

PRTG Webserver could not be started properly

interger support webserver

Views: 9493, on Feb 15, 2014 7:58:51 PM

0 votes
4 replies

Unusual sensor explain

detection sensor unusual

Views: 9491, on Jun 17, 2015 9:26:35 AM

0 votes
3 replies

PRTG smtp notifications suddenly stopped working

exchange-2007 prtg smtp

Views: 9489, on Sep 1, 2010 3:14:07 PM

1 vote
1 reply

vmware monitoring problem

alarm best-practice guest vmotion vmware

Views: 9486, on Oct 28, 2011 7:48:40 AM

0 votes
1 reply

How can I connect to an older PRTG server with PRTG for Android?

android older prtg unsupported

By Matt Barringer [Paessler Support] (460) ●2 ●1
Views: 9477, on May 8, 2015 8:35:56 AM

0 votes
5 replies

SNMPERR_AUTHENTICATION_FAILURE(SNMP error # -35)

snmptrafficsensor snmpuptimesensor snmpv3

Views: 9473, on Sep 7, 2018 10:04:25 AM

0 votes
4 replies

How can I clear "Error in Application Pool State: 'Unavailable'" for App Pool _Total

apppool iis server2008r2

Views: 9468, on Nov 12, 2015 7:06:47 PM

0 votes
12 replies

One-Time maintenance window list

list maintenance one-time

Views: 9462, on Oct 8, 2013 4:44:06 PM

0 votes
1 reply

Local probe Disconnected

disconnected-probe local-probe service

Views: 9455, on Mar 1, 2016 4:32:37 PM

0 votes
3 replies

Sound Alerts

alertsu prtg sounds

Views: 9454, on Jul 9, 2013 5:23:05 PM

0 votes
4 replies

How do you generate additional Remote Probe Access Keys?

access-keys prtg-13 remote-probe

Views: 9453, on Feb 11, 2013 2:19:25 PM