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

After update, web interface is not accessable



A software was automatically downloaded and an install attempted on the evening of the 22nd. I am not sure that it fully installed, but the version reported by the admin tool is, which i believe is the most up to date version.

The problem is that I can no longer access the web monitor. The web server is listening on the correct IP address via the admin tool. I can get to the login page, but once I log in I get the site refused to connect. The network monitor on the system tray of the server is blinking red with "Not Connected (connection refused). The Enterprise console is simply stating "Not Connected (Error in content).


prtg update web-gui

Created on Aug 23, 2018 4:42:19 PM

1 Reply



Hello there,

Usually this message is related to the settings in the "Web Server" tab of the "PRTG Administration Tool". If you have already checked those, please forward us a Support Bundle including the system log files for analysis. This can be done via the "Contact Support" ribbon in the lower right corner of the web interface.

Please also take a look at our new PRTG Desktop Client (BETA). You can install it next to Enterprise Console, no need to uninstall anything.

Thank you very much in advance.

Kind regards,
Birk Guttmann, Tech Support Team

Created on Aug 28, 2018 8:13:09 AM by  Birk Guttmann [Paessler Support]

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.