I had the exact same issue...  Not sure if this helps Downgraded to version 3.0.16 resolved this issue. Releases · MediaBrowser/emby-theater-windows · GitHub The link I included has all the versions.  Download the version appropriate to your OS.  Since  Emby theater is self contained, you can copy this folder to a place on your pc (program files, desktop, documents, spare drive, wherever...) and create an icon on your desktop. Thanks Emby Team for all your help, I am sure you