Can't get PMS to launch after installing

  1. PMS-SHUTDOWN.MSI Error / FIXED!

  2. remove any remants with https://support.plex.tv/articles/202967086-windows-errors-trying-to-upgrade-install-or-uninstall-plex-media-server/

  3. manually delete remaining registry keys and other data: https://support.plex.tv/articles/201941078-uninstall-plex-media-server/

  4. reboot Windows