If you encounter authentication issues with NZBGet please try the following:.
Verify Your Login Credentials
Most login problems are related to inaccurate username and password combinations. We recommend that before changing NZBGet settings that you first verify your UsenetServer username and password by logging into your admin area. Your NNTP username and password combination will be the same.
If needed, update the username or password within NZBGet, scroll to the bottom of the UsenetServer settings, and click “Test Connection”. If you see the “Connection Successful” message there is no need to go further.
Removing a server and reinstalling it
If you’ve verified your username and password are entered into NZBGet correctly and you’re still unable to connect we suggest removing that server configuration and re-installing it. If the server configuration was corrupted, deleting it and re-creating it usually solves the issue.
Removing a server
To remove the server, scroll to the bottom of the UsenetServer’s settings and click on the “Remove Server” button, and click “Delete” on the confirmation dialog box.
Reinstalling a server
Now with the server removed go through the installation process.
If you continue to experience issues with NZBGet please contact our support team or refer to the NZBGet forums.