Plex remote access breaks after reformatting an M4 Mac mini
After a full reformat of an , no longer works the way it did before. The server data was backed up using Plex’s own backup instructions before the reformat, and both access and worked well before. After the reformat, will not stay connected; refreshing the setting briefly enables it, but it turns off again after leaving and returning to the page.
Before, Google Home router settings did not need a manual port change, but now the connection fails despite several attempts. An open port checker says port 32400 is open. Plex for Android cannot find the server and shows it as offline, and Symfonium for Android also has trouble.
On the same Wi-Fi, Plex for iPadOS, Plex Dash, Plexamp, and Plezy still work. The setup is 1.43.2.10687 on Apple Mac16,10 arm64 with macOS 26.5.1.
Key points
- worked before the was reformatted, but now it will not stay enabled.
- An open port checker reports that port 32400 is open, yet Plex still fails.
- Plex for Android shows the server as offline, while several apps on the same Wi-Fi still connect.
- The server is running 1.43.2.10687 on Apple Mac16,10 arm64 with macOS 26.5.1.
- The likely area to check is networking and restored server identity, not basic media playback on the .