This started only recently and I don't know what the cause is. The Samsung Smart TV clients can connect and browse but upon playback they get a "unable to connect to the content server" - my logs on the server side (v1.2.2.2857( on x64 Win10) show there's a 0 of playback after the attempt.
I've tried turning it from PREFERRED for secure connections to DISABLED, adding the affected IP addresses to "not require signin" and still no go. iPhone and Xbox Plex clients are still able to connect, as are desktop browsers.
Anyone else getting this problem?