Plex media server works but does not play

[ChuckPa]

It is most likely that the DSM update has reset the permissions you set for your media.

Please take a look here. This How-To will help you walk through the process of making certain your media is accessible.

If there are other problems, uninstalling and reinstalling Plex fixes almost all other cases. Your media is safe doing this.

Plex Media Server security changes for Synology users

Community Announcement - Synology users - Security update. Server Version#: Plex Media Server 1.15.4.994 and above By popular customer request and to improve the safety of your media, we’ve made a small but visible change to what PMS can do on your NAS by itself. We have removed user plex from the administrators group. This was a holdover from DSM 5.2 when it was required for PMS to run properly on the NAS. Now, with DSM 6 and above, this is no longer required. By doing so we’ve lower…