Plex Media Server (Windows) running, but can't log in nor get to server settings

Hi,

I’ve been happily running PMS on Windows 10 but in the last day it has become unusable. I can log into the plex app both on the box (e.g. 127.0.0.1:34000) and via app.plex.tv but in every case when trying to connect to my server from any client I get a “The server “” is unavailable”. If I click on the server settings I get “Server settings are unavailable.”

I’ve tried:

  1. restarting server
  2. uninstalling and reinstalling
  3. deleting registry keys per: https://support.plex.tv/articles/204281528-why-am-i-locked-out-of-server-settings-and-how-do-i-get-in/

In my log file I find entries like this:

Mar 31, 2018 07:31:56.457 [9836] DEBUG - Completed: [127.0.0.1:3530] 404 GET /web/undefined/accounts/1 (9 live) GZIP 3ms 379 bytes (pipelined: 2)
Mar 31, 2018 07:31:56.457 [9836] DEBUG - Completed: [127.0.0.1:3531] 404 GET /web/undefined/myplex/account (9 live) GZIP 3ms 379 bytes (pipelined: 2)
Mar 31, 2018 07:31:56.457 [9836] DEBUG - Completed: [127.0.0.1:3540] 404 GET /web/undefined/system/:/prefs (9 live) GZIP 1ms 379 bytes (pipelined: 1)
Mar 31, 2018 07:32:11.224 [9836] DEBUG - CERT: incomplete TLS handshake: short read
Mar 31, 2018 07:32:20.021 [9836] DEBUG - CERT: incomplete TLS handshake: short read
Mar 31, 2018 07:32:53.430 [9836] DEBUG - CERT: incomplete TLS handshake: short read

Any help is appreciated.

Do you have several user accounts on this Windows machine?
Log off every user, then restart it properly. Then log in the user account you are using by default.

That did it. I logged out of both windows accounts, restarted the server, and now I can access Plex. Many thanks!