HEVC Video Extensions in Windows version 2004


Does anyone know where I can get some decent support for the HEVC Video Extensions?

Since installing Windows v. 2004, I have not been able to play all the HD Videos that I could play before.

I suspect there is some incompatibility with the HEVC codes and version 2004, but I have no way to verify this.

Does anyone know the link to the known issues list for Windows v. 2004?

Thanks in advance!