You can use the reg query command to determine the build number of your Windows Server installation as follows:
reg query “HKLM\Software\Microsoft\Windows NT\Currentversion” /v currentbuild
For example, let’s say the output from running this command is this:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\Currentversion
currentbuild REG_SZ 7601
The build number returned from this query is 7601. You can then use the information below to determine which version of Windows Server you’re running:
6001 – Windows Server 2008
7600 – Windows Server 2008 R2
7601 – Windows Server 2008 R2 SP1
9200 – Windows Server 2012
9600 – Windows Server 2012 R2
Mitch Tulloch is an eleven-time recipient of the Microsoft Most Valuable Professional (MVP) award and a widely recognized expert on Windows Server and cloud computing technologies. For more information see http://www.mtit.com.
