Windows 8 (upgrade) can't activate solution - reactivate on new machine

Опубликовано: 22 Июнь 2026
на канале: Tamaartje50
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Windows 8 (upgrade) can't activate and reactivate on a new machine.

Windows 8 (upgrade) kan niet activeren na een schone installatie. Opnieuw activeren op een nieuwe computer.

our key is an update only key... meaning it won't allow a fresh install... unless you do the registry workaround from Windows 7.

You need to open a run box and type: "Regedit"

Then located this key:

HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Setup/OOBE/

And find the one called "MediaBootInstall".

Double click that and change it from a 1 to a 0.

Then open up cmd as an administrator

Type the command "slmgr /rearm"

You will get a restart your computer messge.

Restart

Then when your computer restarts you need to open a run box again and type "slui.exe 3" and it will allow you to enter your product key and activate.

If this is not working, try activating it true the phone.