- make sure that your current windows user account has full access permissions to all files, folders and subfolders in the Plex data folder
- Reinstall the server version manually:
- Stop/quit/end Plex Server with the tray icon
- deinstall Plex Server with the regular ‘Apps’ control panel of Windows (do not use 3rd party ‘Uninstaller’ software like Revo etc.)
- for safety, reboot Windows
- download the installation exe of the newer version and install it
- perform this procedure to force a re-authentication with plex.tv: https://support.plex.tv/articles/204281528-why-am-i-locked-out-of-server-settings-and-how-do-i-get-in/
