Chromecast refuses to connect to server if used first on a different OS

[Garterbelt 0]

I recently set up Emby on my PC running Linux so that my mom could easily watch stuff on her Chromecast, and it worked great. I use both Windows and Linux (specifically Pop Os) and today I booted up Windows and configured Emby there too. Everything seemed to be working fine until my mom told me she was unable to get Emby working on her Chromecast (stuck on "Ready to Cast"), which seemed weird because I tried it on mine and worked perfectly. After trying several times, restarting, opening ports, etc., I just decided to try booting the server on Linux, and her Chromecast works now! The only problem is that mine doesn't anymore, so it seems like once a Chromecast connects to an Emby server, if you switch to a different OS and run another server it will refuse to play files. Hope I can get this fixed because it'd be very frustrating if I have to switch to a different OS every time someone wants to use the server.

[Luke 37003]

Hi there @Garterbelt I've never really seen this before and I have a number of devices and servers on hand for testing. Are you still running into this?