I tried testing a movie from my home server in plex through firefox and repeatedly got this message, even after reloading.
I knew that they had paywalled the apps on mobile and streaming from outside the network but now they have also blocked watching your own movies through your own hardware.
I do get the point that making software should be able to sustain people but I dont see the move of plex as a fair thing to do. Yes, they have made great software but taking your home server hostage feels like the wrong move.
Even a pop up that says "we need you to donate please" would have been fine. make it pop up before every movie, play donation ads before any movie but straight up disabling the app is kinda cruel.
Anyway, i have switched to jellyfin and it is insanely good. please give it a try. you can run it alongside plex with not issues (at least i had none) and compare the two.
In any case, good luck. Let me know if you need help.
I've tried submitting recategorization requests through the links provided by my workplace on the block pages. The requests have been denied.
If I'm remembering right, it's a Symantec web filtering solution that we use and they've decided that my domain is in the "personal blog" category. Which is a blocked category. Jeff Geerling's website actually falls under the same category, which also kind of sucks, because I like reading some of the stuff he puts out.
I would go around them and go directly to the source of categorization. It looks like this is the Symantec categorization website in case it's different from what you're workplace provides - https://sitereview.bluecoat.com/#/