Currently 3 domain controllers in single domain. 2 servers Windows 2008 R2, 1 server Windows 2008 Standard.
The domain functional level is currently Windows 2008. In the Ad Administrative Center, there is option to raise Forest Function level. It was Win2003. I initiated the Raise Forest Function Level to Win2008 and it failed.
This is the message when I go back to the "Raise the Forest Function:
"To raise the forest functional level, ensure that all domain controllers in the forest are running appropriate versions of Windows Server and there are no domains in the forest with a domain functional level set to Windows 2000 mixed."
I don't have any Windows 2000 or 2003 domain controllers. There is one lowly Win2k3 member server still operating. I know that we converted to mixed mode when we were at w2k and wk3. However, the same screen shows the Forest Function Level at Windows 2008. How do I verify what the Forest Function level is?