Although Windows Server 2012 has been out for a year, it’s still not fully supported in every vSphere environment, unless you’ve managed to keep up with every update. Here is the full story on Windows Server 2012 support in vSphere:
- Windows Server 2012 is not supported at all under vSphere 4.x.
- Windows Server 2012 is supported under vSphere 5.0 U1 with ESXi500-201209001(Patch 04) and 5.0 U2.
- Windows Server 2012 is fully supported under vSphere 5.1 and vSphere 5.5.
The same compatibility rules apply to Windows 8.