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I would like to deactivate the copy of Windows 8 Pro that I have installed on my system because one of cousins attempted on Install windows from the same disk and activated with same key. So, I would like to buy a new product for it. Do I need reinstall it over again?

Gregek
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  • possible duplicate of [Change the Windows 8 product key after installation?](http://superuser.com/questions/463208/change-the-windows-8-product-key-after-installation) – Ƭᴇcʜιᴇ007 Jun 18 '13 at 04:02
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    Possible duplicate of [Change the Windows 8 product key after installation?](https://superuser.com/questions/463208/change-the-windows-8-product-key-after-installation) – Ramhound Sep 22 '19 at 01:55

2 Answers2

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Press the Win key, then type Run and press Enter. Type slmgr.vbs -upk, and click OK

It should deactivate the license and get you into trial, from there you can reactivate using another license

Community
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Walid
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  1. Windows Key
  2. (Focus is in Search field) Type cmd
  3. (Your search result is returned) Right Click Command Prompt
  4. (Contextual menu open) Click Run as Administrator
  5. slmgr /dlv
  6. Copy the ActivationID to notepad or something
  7. slmgr /upk ActivationID (FROM STEP 6)
chrips
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