In-Place Upgrade of Windows Server Edition

Want to upgrade the Windows 2008 R2 OS edition without re-installing?  This page is for you.

To get the current edition:

dism /online /get-currentedition

To get a list of available editions to which you can upgrade:

dism /online /get-targeteditions

To set the new edition:

dism /online /set-edition:ServerEnterprise /ProductKey:xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

or

dism /online /set-edition:ServerDataCenter /ProductKey:xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

After that, all you need to do is reboot!

Somestimes, you may receive an error - even if you use the correct key!  In this case, use the KMS keys - and then reboot and reactivate using your key.  Here is a list of KMS keys from Microsoft.

http://technet.microsoft.com/en-us/library/ff793421.aspx