0x8007007B and 0x800706BA: Wrong KMS Host Name or Port 1688 Blocked
0x8007007B is published by Microsoft as a DNS name that does not exist; 0x800706BA is the RPC server being unreachable. Here is how to tell them apart.
0x8007007B is published by Microsoft as a DNS name that does not exist; 0x800706BA is the RPC server being unreachable. Here is how to tell them apart.