Edit the plex.ini file. Add the following lines:
[debug] <-- add debug section if it does not exist.
disableUpdater=true
Plex Desktop:
- Windows:
%LOCALAPPDATA%\Plex\plex.ini - macOS:
~/Library/Application Support/Plex/plex.ini
Plex HTPC:
- Windows:
%LOCALAPPDATA%\Plex HTPC\plex.ini - macOS:
~/Library/Application Support/Plex HTPC/plex.ini
