To manually configure a computer to use NCSU’s KMS service, log onto the computer as an administrator and enter the following commands into a command prompt that has been opened with the right click option of “Run as administrator”:
cscript c:\windows\system32\slmgr.vbs -skms kms.ncsu.edu:1688
cscript c:\windows\system32\slmgr.vbs -ato
Note: The slmgr.vbs script gets installed as part of Windows Operating Systems since the release of Microsoft Vista and Windows Server 2008. It resides in the C:\Windows\System32 directory.
See the Troubleshooting KMS Activation page for more information.