New Question
 
 
PRTG Network Monitor

Intuitive to Use.
Easy to manage.

200.000 administrators have chosen PRTG to monitor their network. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free PRTG
Download >>

 

What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general. You are invited to get involved by asking and answering questions!

Learn more

 

Top Tags


View all Tags


Is there a workaround for this error HTTP/1.1 401 Unauthorized

Votes:

0

Your Vote:

Up

Down

Setting up a http probe i continue to get this error. Even when i know the correct account is being used.

401 http unauthorized

Created on Oct 18, 2011 1:30:33 PM by  lee connell (0) 1



6 Replies

Votes:

0

Your Vote:

Up

Down

Hello,

you see this on an HTTP Sensor? Is there a Proxy involved in the scenario?

Depending on the type of web page you are trying to access with an HTTP sensor, there might be a form that you need to enter credentials in. In this case you may need to do this in a POST format in the sensor settings to gain access to the site first.

best regards.

Created on Oct 18, 2011 3:55:01 PM by  Torsten Lindner [Paessler Support]

Last change on May 7, 2014 5:10:05 PM by  Gerald Schoch [Paessler Support]



Votes:

0

Your Vote:

Up

Down

Thanks for the reply, This is a virtual address of a netscaler that load balances the url between 2 servers

Created on Oct 19, 2011 3:48:00 PM by  lee connell (0) 1



Votes:

0

Your Vote:

Up

Down

That does not really answer the questions I'm afraid, but presuming that it's an HTTP Sensor, once again, is there a proxy involved here (either in the network itself, or maybe falsely entered in PRTGs settings)?

Created on Oct 21, 2011 1:17:53 PM by  Torsten Lindner [Paessler Support]



Votes:

0

Your Vote:

Up

Down

sorry no proxy involved, we have other http sensors working, only this one seems to have an issue.

Created on Oct 21, 2011 1:22:07 PM by  lee connell (0) 1



Votes:

0

Your Vote:

Up

Down

What happens if you access the URL entered in the sensor from the PRTG host with a browser?

Created on Oct 21, 2011 3:43:13 PM by  Torsten Lindner [Paessler Support]



Votes:

0

Your Vote:

Up

Down

that works fine

Created on Oct 21, 2011 3:45:14 PM by  lee connell (0) 1



Please log in or register to enter your reply.


Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.