KMS Error 0x80004FE2F after running slmgr.vbs /ato

If you have a KMS server running, newly installed servers will automatically activate. However, you can also manually activate your server by entering the command slmgr.vbs /ato
In my case, I recently installed a Windows 2008 SP2 server, but couldn’t get the machine activated. Everytime I ran the command slmgr.vbs /ato, the following error returned:

Run ‘slui.exe 0x2a 0x80004FE2F’ to display the error text
Error: 0x8004FE2F


When running this slui.exe command, the following message displayed:


… yep, a pretty nothing saying message indeed! :-)

To resolve this problem, I needed to install KB968912. This update is needed for a successful registration to the KMS server. This update may also be needed on Windows 7, Windows Server 2008 R2 and Windows Vista. The update requires a reboot after installation.


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