Plex

General

Plex Server Not Authorized

In some rare situations, you may find yourself “locked out” from being able to access your Plex Media Server and unable to directly access the server settings. One of the most common causes for this is if your server is signed in to one account (perhaps one used with an old, previous installation) and your web app is signed in with a different account that doesn’t have permission to connect to the server.

It can also occur after you change your password, remove your server “Device” entry, or otherwise invalidate the existing authentication token that your server uses.

You can try the instructions here: [1]

But likely you'll need to "re-claim" your server. See instructions below.

Claim Plex Server

This must be done by accessing http://127.0.0.1:32400 locally on the Plex server. Of course, this is difficult to do on a headless Linux box with no GUI. So we tunnel!

You can pretty easily tunnel with PuTTY:

Go to Connection > SSH > Tunnels
Add a new forwarded port:
Source port: 32400

Destination: 127.0.0.1:32400
After you open the SSH connection, point your browser to http://127.0.0.1:32400