Rebuild of Windows - Cannot Connect to Plex Server

  1. Did you think of this caveat: [HowTo] An extended guide on how to move the Plex data folder on Windows

Beware! The path you type in must not include ‘Plex Media Server’ as last part.
So if now your plex data reside in E:\plex\Plex Media Server\ , you type only
E:\plex\ into the input field.

  1. If the machine died while the server was running, chances are that the primary database file is damaged. Consider going back to a backup: https://support.plex.tv/articles/202485658-restore-a-database-backed-up-via-scheduled-tasks/

  2. try re-claiming the server: https://support.plex.tv/articles/204281528-why-am-i-locked-out-of-server-settings-and-how-do-i-get-in/
    Make sure browser add-ins, internet filters, VPN software are disabled and the hosts file doesn’t contain any entries which relate to Plex.