Detect the Version of WSUS
Applies To: Windows Server Update Services, Windows Small Business Server 2011 Standard, Windows Server 2008 R2, Windows Server 2003 with SP2, Windows Server 2008 R2 with SP1
In Windows Server Update Services (WSUS) 3.0 SP2, the WSUS version persists in the registry to support installer technologies. You can use the instructions in this topic to verify the version of WSUS that is running on a computer.
WSUS 3.0 SP2 has two registry values that identify the WSUS version:
InstallType, which supports two installation types:
1 = Install
2 = Console-only install
VersionString, which is a string of the form Major.Minor.Build.Revision
To detect the WSUS version
Open the registry editor and locate the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Update Services\Server\Setup.
Check the InstallType value.
WSUS 3.0 SP2 has a value of 1 or 2
Check the VersionString values.