I get an error
PRTG Webserver could not be started properly. Could not start webserver for http://127.0.0.1: Fatal error: No IP specified for web server.
What can I do?
PRTG Web server does not start after installation of PRTG. What can I do?
Modified on 2025-06-10 11:38:24 +0200
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.
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.
There is probably an issue with the network card on your system (for example, there does not exist one).
On the system where you installed PRTG, please open the PRTG Server Administrator tool from the Windows start menu. In the Web Server tab, set the web server settings to use Port 80 and Localhost IP 127.0.0.1. Leave the program with Ok and confirm (re-)start of Windows services.
Then open a browser on the same system (Google Chrome or Mozilla Firefox) and open the URL 127.0.0.1. You should now be able to access the PRTG web interface locally.
Dec, 2011 - Permalink