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I lost my activation key for Office 2010

Michael Cron 0 Reputation points
2026-03-06T21:55:57.9566667+00:00

i have lost my product key for office 2010. How do I install it without the activate key?

Microsoft 365 and Office | Install, redeem, activate | For home | Other
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  1. Ian-T 7,630 Reputation points Microsoft External Staff Moderator
    2026-03-10T06:58:29.6633333+00:00

    Hi Michael Cron

    Welcome to Microsoft Q&A forum and thank you for your question.

    I understand how frustrating this is, especially with an older version like Office 2010.

    Unfortunately, Office 2010 cannot be installed or activated without a valid product key. Microsoft does not provide replacement keys if the original one is lost.

    There are still a few options that you can try, such as:

    • Recover the key from a computer where Office 2010 is still installed, if you still have access to that device.
    • Check your original proof of purchase (email receipt, product card, or box).
    • If neither is available, the only supported path forward is to purchase a newer version of Office or switch to Microsoft 365.

    Office 2010 is not supported anymore, please refer to End of support for Office 2010 .

    Thank you for your understanding.

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