Hi all! I remember at one stage being able to control the playing media streams from the server interface - I used it once to shut down my daughters stream so she would go to bed 
When I tried to do the same thing last night, I could not find the controls - I could see the streams, but I could not interact with them (I could only edit the info and play the same file locally). Where are the controls now? Or have they been removed in an update?
Thanks!
This has never been an option in PMS. If you used a function like this is was likely with Transmogrify, a browser extension, which has had that option available with some clients, but not all. And since the dev is no longer maintaining it, the feature isn’t working nearly as well as it used to.
This has been a pretty highly requested Feature Request in that forum. Until we get that type of control, users are going to be able to continue to abuse the systems they have access to.
Thanks Mike for the quick response (just had the same problem again, and remembered I posted this, so thought I’d follow up!!)
However… I think it had something to do with remote controlling the player from another instance (maybe it was configured to accept remote control input from another computer / mobile device? that’s a setting in the client, I think), but I cannot figure out the steps to do it - I definitely remember doing it (it was not RDP-based, or killing the stream or connection or anything like that, definitely through the OOTB product with no tricky add-ons)… Is there a ninja that might be able to help?
Perhaps you are talking about the Plex Companion feature?
Here’s is a list of clients that support companion.
With Plex Companion, if you initiated the playback, you can stop it. There is not a way currently to just stop a stream from PlexWeb. You can shut down PMS, kill a transcoding process (if the stream is being transcoded), or there are some API commands that may work depending on the client.
It could be - I must be confused. All good - thanks all!