The most common reason for domain join failures is incorrect DNS configuration. For your computer to find the domain controller, its network settings must point to a DNS server that can resolve your ...
If Hyper-V failed to connect to local computer and says "Hyper-V encountered an error trying to access an object on computer" ...
AMD confirmed the issue and recommends rolling back to 26.6.1, but that means losing FSR 4.1 support on RDNA 3 until a fixed version ships.