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
4 replies

SNTP sensor reports code PE085

linux ntp sntp

Views: 10429, on Apr 15, 2015 3:52:47 PM

0 votes
14 replies

DHCP Sensor - Could not open UDP Port 68. Please make sure this port is not in use. (code: PE091)

dhcp pe091 udp-68

Views: 10423, on Oct 29, 2012 2:55:30 PM

0 votes
3 replies

Move devices between probes

prtg remote-probe wmi

Views: 10420, on Nov 9, 2010 12:37:34 PM

0 votes
1 reply

Exchange Powershell Eventlog 6

eventlog exchange-powershell powershell

Views: 10417, on Dec 17, 2013 4:41:18 AM

0 votes
1 reply

How does auto-discovery with SNMP Traffic sensors work?

auto-discovery snmp-traffic snmptrafficsensor

By Maike Guba [Paessler Support] (2,404) ●2 ●1
Views: 10415, on May 24, 2019 8:21:18 AM

1 vote
1 reply

Which OID library supports the AS400 version of the IBM MIB?

as400 prtg snmp

Views: 10408, on Jun 14, 2011 8:58:06 PM

0 votes
4 replies

How to read the graph and data, speed vs volume

netflow9 prtg reading-chart

Views: 10404, on May 1, 2012 3:07:59 PM

0 votes
5 replies

Sensor SNTP

pe085 sntp valid-time

Views: 10402, on Apr 10, 2014 8:29:02 PM

0 votes
6 replies

PRTG update process is unsuccessful while trying to install Npcap. What can I do?

error npcap packet-sniffer prtg update windows-server-2008-r2

By Maike Guba [Paessler Support] (2,404) ●2 ●1
Views: 10398, on Oct 22, 2019 5:00:36 AM

0 votes
7 replies

Monitor Windows Server Backup

backup backup-monitoring event-log eventlog

Views: 10396, on Jul 8, 2016 2:08:43 PM

0 votes
3 replies

Layer 2 network map

maps prtg switch

Views: 10392, on Aug 15, 2013 7:20:57 PM

0 votes
1 reply

How can I add a working Networked Drive Share Sensor to PRTG?

prtg smb wmi

Views: 10391, on Jun 10, 2011 4:43:10 PM

0 votes
11 replies

SSH Script Sensor - Failed to connect

connection failure ssh-script

Views: 10389, on May 16, 2016 12:18:43 PM

0 votes
3 replies

PRTG API - Get all sensors and their config values ?

api configuration snmp

Views: 10371, on Feb 28, 2019 10:19:04 AM

0 votes
2 replies

SIP Trunks

mitel sip trunk

Views: 10367, on Sep 27, 2010 2:49:30 AM