How to enter the product key in Windows server 2012 R2.

The slui interface in server 2012.
The slui interface in server 2012.

Entering the product key in server 2012 sometimes is fraught with frustration. You can try to enter it with this command.

PS C:\Users\Administrator> slmgr -ipk XXXX-XXXX-XXXX-XXXX

and you get an error. The best way is to use this command.

PS C:\Users\Administrator> slui

This command opens the pictured GUI; this allows you to enter the product key. This works very well with Windows Server 2012 R2 9600.

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