Plex for Android doesn't work while using a secure connection [An error occurred while attempting to play this video. Please check your connection and try again]

Plex Players Mobile Devices
2

If you are seeing the “check your connection” error message:

There is a problem with the current Android client and older versions of Plex Media Server (1.18, 1.19, maybe others).

The problem is visible in the Android client log: [FFmpeg] [ERROR] [tls @ 0xc35efba0] Peer certificate failed verification

Updating to the current release of Plex Media Server fixes the problem.

If you cannot update to the current release, the workaround is to disable secure communications on the Plex Media Server and the client.

Plex Media Server: Settings → Network → Secure Connections = Disabled.
Plex Android app: Settings → Advanced → Allow Insecure Connections = Always

Notes:

  • You will lose Plex Media Server access via app.plex.tv, which uses https, when you disable secure communications. You can connect to your Plex server via http://pms_ip_address:32400/web (ex: http://192.168.1.2:32400/web).
  • Plex Relay will not be available, as it requires secure communication.
  • You may have to reconfigure other Plex clients to allow insecure connections.