How to activate Windows (non-core edition error)?

When activating Windows Server You can get an Error: 0xC004E028, like on screen below:


Windows Script Host
Activating Windows(R), ServerStandard edition (44a5b4c3-e4b1-483b-81e8-0f78f4d98283) …
Error: 0xC004E028 On a computer running Microsoft Windows non-core edition, run ‘slui.exe 0x2a 0xC004E028’ to display the error text.

OK

or telling You that the product key you entered didn’t work (error 0x80070490):

To fix it, open CMD as an administrator and type:

slmgr /upk
slmgr.vbs /cpky
slmgr /ckms
slmgr.vbs /ckms
slmgr /skms localhost
slmgr.vbs -ipk PUT-WINDOWS-KEY-NUMBER-HERE
slmgr.vbs -ato

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