How to upgrade Windows 2012 R2 evaluation to full version?

Although is Windows Server 2012 R2 “old” OS, before few weeks I had to license evaluation version of Windows Server 2012 R2. Process is very simple, but change the license key requires use of CLI instead GUI. By Microsoft, that is not “just” licensing, that is upgrade to Windows Server 2012 R2.

At the first step, you need to check current edition and what are possible editions for upgrade. In command prompt or PowerShell run command DISM /online /Get-CurrentEdition. Output will show you information about current edition.


With the command DISM /online /Get-TargetEditions, you can check target editions for upgrade.



When you confirm that you have appropriate license key, run command DISM /online /Set-Edition:<edition ID> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula, where the edition ID is the edition which you want. Key must be valid for appropriate edition. The server need to restart twice in order to fully apply new editiom.




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