Upgrade Windows 2012 R2 evaluation to full version

C:\Windows\system32>DISM /online /Get-CurrentEdition

Deployment Image Servicing and Management tool
Version: 6.3.9600.17031

Image Version: 6.3.9600.17031

Current edition is:

Current Edition : ServerStandardEval

The operation completed successfully.

C:\Windows\system32>DISM /online /Get-TargetEditions

Deployment Image Servicing and Management tool
Version: 6.3.9600.17031

Image Version: 6.3.9600.17031

Editions that can be upgraded to:

Target Edition : ServerStandard
Target Edition : ServerDatacenter

The operation completed successfully.

C:\Windows\system32>DISM /online /Set-Edition:ServerStandard /ProductKey:XXXXX /AcceptEula

Deployment Image Servicing and Management tool
Version: 6.3.9600.17031

Image Version: 6.3.9600.17031

Starting to update components...
Starting to install product key...
Finished installing product key.

Removing package Microsoft-Windows-ServerStandardEvalEdition~31bf3856ad364e35~amd64~~6.3.9600.16384
[==========================100.0%==========================]
Finished updating components.

Starting to apply edition-specific settings...
Finished applying edition-specific settings.

The operation completed successfully.
Restart Windows to complete this operation.

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