I updated to version 4.69.1 this morning. I got this same error on my server after the update. I had to power cycle the windows media server to correct it. Now Plex apps (on TVs / phones / pads ) works fine, but from the web interface on my windows server now I can only play items that are MP4
AVI
Playback Error
Conversion failed. A required codec could not be found or failed to install.
MKV
Playback Error
An error occurred trying to play this item.
Error code: s1001 (Network)
These all worked fine yesterday - how do I roll back 4.69.1 ??
the local web ( IP:32400/web) app is still that version. The server version is under the general area that is under your servers name if that is that you meant to list. and this does not seem to be related to the first posters issue that they couldn’t access settings.