If you are testing an evaluation version of Windows 8.1, you might be inconvenienced because Microsoft does not support any way to convert the evaluation edition to the full enterprise edition with a public KMS key like it is possible for Windows Server 2012. You cannot change the edition with DISM commands in Windows 8.1. Even if you download the ISO image of the enterprise edition of Windows 8.1 and try to upgrade the OS, it will not allow you to proceed.
Here is a workaround which lets you upgrade Windows 8.1 Evaluation to the Full version easily.
Using a simple Registry tweak, we can unblock the upgrade and use the setup program of the full version on the installed Windows 8.1 evaluation edition. This will preserve all installed apps and settings. Follow these simple steps:
- Open Registry Editor.
- Go to the following Registry key:
- Change the EditionID value data from EnterpriseEval to Enterprise. Next, change the value data of the ProductName value from Windows 8.1 Enterprise Evaluation to Windows 8.1 Enterprise. See these pictures:
- Now you can upgrade it using the regular Enterprise ISO image:
- After the upgrade, it is possible to activate the upgraded OS using your regular KMS server:
That's it! Using the same trick you can also change the edition from Enterprise to Windows 8 Pro if you need. It works like a charm (via habr).
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