How to change Windows 10 product key

If you need to change the product key of the installed OS, for example. suppose you have installed Windows 10 initially with a generic key, and then wish to change it to an authentic key that you purchased, this can be done quickly without reinstalling. You don't need any third party tools or complex Registry tweaks. Note: This trick also works in Windows 8.1, Windows 8, Windows 7 and Windows Vista. Follow the steps below.

Change the product key in Windows 10

  1. Open an elevated command prompt. See: How to open elevated command prompt in Windows 10.
  2. Type the following command to install a new product key and press Enter:
    slmgr.vbs -ipk 11111-11111-11111-11111-11111

    Replace "111" with your actual product key.
    change product key windows 10

  3. To activate Windows after changing the key, you need to run the following command:
    slmgr.vbs -ato

    activate product key windows 10

Wait for a few seconds and the check System Properties window in Control Panel\System and Security\System. It should say that Windows 10 is activated.
That's it.

13 thoughts on “How to change Windows 10 product key

  1. Shyam Reddy

    Excellent one, Sergey. I updated with Windows 10 tech preview with my Windows 8 authentic product key. Thank you. :)

    Like or Dislike: Thumb up 0 Thumb down 0

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    1. Sergey Tkachenko Post author

      heh, you are welcome :)

      Like or Dislike: Thumb up 1 Thumb down 0

      Reply
  2. Jan

    hello,
    i got problem when i try to enter my genuie OEM key i het message: ERROR: 0xC004F050 Software Lisence Service reported that key is invalid. What i have to do ? Try to replaced key by slui, by this command and ms toolkit/kmsspico. Nothing helped. Please contact me by mail.

    Well-loved. Like or Dislike: Thumb up 7 Thumb down 2

    Reply
  3. Greg

    I had to use slmgr.vbs /ipk instead of -ipk. Not sure if this is a new Windows 10 thing, I’ve been used to – instead of /

    Like or Dislike: Thumb up 3 Thumb down 1

    Reply
  4. Matt

    Thanks! I had to use this in Windows 10 (worked just like you listed with the -ipk). When I tried to change my product key using the standard Settings – Activation – Change Key I kept hearing a chime but nothing came up. Almost as if the dialog was appearing behind my window but there was no indication of it or any way to switch to it.

    This worked like a charm. :)

    Like or Dislike: Thumb up 1 Thumb down 0

    Reply
  5. moses

    am using windows 10 home sibgle lang x64 but the slmgr did not activate it but it was able to change d product key

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  6. moses

    error msg;
    no key management service could be contacted

    Like or Dislike: Thumb up 1 Thumb down 0

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  7. muath

    run cmd as administrator

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    Reply
  8. kksilvery

    Hi,
    Yes, You’re method worked for me . Thank you for awesome post.

    Like or Dislike: Thumb up 1 Thumb down 0

    Reply
  9. Murali

    nice information about how to change windows 10 product key thanks for sharing

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    Reply
  10. Divya Prakash Mishra

    Please provide me another product key of windows 10 pro

    Like or Dislike: Thumb up 2 Thumb down 1

    Reply
  11. Spicy Flier

    I purchased a Win10 Pro install DVD with an SSD from an authorized retailer. Upon scratching the concealment sticker on the micro COA, it damaged some of the characters to make them illegible. The OS is installed but cannot be activated. I’ve called Microsoft technical support, but they have been of no help at all. Suggestions (without spending money again for same OS)?

    Like or Dislike: Thumb up 0 Thumb down 0

    Reply
  12. afsane

    code

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