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
7 replies

Not Connected (401 Unauthorized)

connection-issue installation prtg-console

Views: 14433, on Oct 29, 2011 9:01:11 PM

0 votes
14 replies

Charting volume data

channels prtg traffic-volume

Views: 14429, on Jan 5, 2011 6:27:35 PM

0 votes
1 reply

My HTTP sensors don't work. What can I do?

error http-sensor prtg troubleshooting

By Maike Guba [Paessler Support] (2,404) ●2 ●1
Views: 14392, on May 16, 2019 12:35:16 PM

0 votes
4 replies

How can we merge two sensors into one ?

prtg8 sensor snmp

Views: 14387, on Aug 19, 2011 9:13:58 AM

0 votes
3 replies

Grey (no data received) sensors

grey-sensors prtg snmp wmi

Views: 14383, on Nov 19, 2012 2:54:39 PM

0 votes
3 replies

Custom sensor: Get-Process with Powershell

get-process powershell script

Views: 14376, on Apr 7, 2015 12:50:39 PM

0 votes
6 replies

PRTG core server service not starting

core-service prtg v16

Views: 14372, on Jun 15, 2016 3:20:29 AM

0 votes
4 replies

Disable Revocation Check - SSL Certificate Sensor

certificate check disable revocation ssl

Views: 14354, on May 17, 2019 9:04:17 PM

0 votes
1 reply

PRTG is showing Wrong Data Tree version. Needed: 4 - Found: 5

10061 data-tree-version prtg service-not-starting

Views: 14351, on Aug 11, 2010 7:56:04 PM

0 votes
6 replies

We would like to know how long a file takes to copy

file sensor smb speed

Views: 14349, on Jul 11, 2011 2:52:39 PM

0 votes
1 reply

How much bandwidth is required for remote probe and core server connections?

bandwidth networking planning prtg sensor usage volume

By Patrick Hutter [Paessler Support] (7,225) ●3 ●3
Views: 14337, on Feb 17, 2010 4:15:05 PM

0 votes
5 replies

No available interfaces on this device (code: PE049)

dell error openmanage ptg snmp

Views: 14328, on Nov 1, 2012 4:20:11 PM

0 votes
4 replies

How to monitor the result of CA Arcserve Backup?

backup prtg snmp wmi

Views: 14284, on May 31, 2010 6:54:31 AM

0 votes
3 replies

Why am I getting a 11001 socket error prtg on my probe sever

ping-sensor remote-probe socket-error

Views: 14251, on May 13, 2013 4:41:43 PM

0 votes
8 replies

How to monitor HPE Switch

hp hpe-5820x switch

Views: 14213, on May 24, 2017 9:17:11 AM