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Fix Microsoft 365 activation

Mark Janczewski, MD, MPH 5 Reputation points
2025-10-16T17:34:21.1933333+00:00

I just purchased Microsoft 365 Family to replace an expired one. But when I open ANY application I get an error and cannot use the application. How do I fix that?

Microsoft 365 and Office | Other
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  1. Harold Milan 17,525 Reputation points Independent Advisor
    2025-10-16T18:11:25.4266667+00:00

    Hi Mark,

    This issue typically occurs when the Office apps haven’t properly recognized the new subscription yet. Even though your Microsoft 365 Family plan is active, the apps may still be referencing the expired license, which causes a conflict and prevents them from launching correctly.

    Other possible causes include:

    A sign-in mismatch the apps might be signed in with a different Microsoft account than the one used to purchase the subscription.

    A delayed license refresh, especially if the apps were open during the upgrade.

    A corrupted installation or cache, which can block activation.

     

    Here’s a step-by-step guide to help you resolve it:

    Confirm Your Subscription Is Active:

    Visit account.microsoft.com/services.

    Sign in with the Microsoft account you used to purchase Microsoft 365 Family.

    Make sure the subscription shows as active.

    Sign Out and Back Into Office Apps:

    Open any Office app (like Word or Excel).

    Go to File > Account.

    Sign out of all accounts listed.

    Sign back in using the same Microsoft account that holds the active subscription.

    Repair Office:

    Go to Settings > Apps > Installed Apps.

    Find Microsoft 365, click the three dots, and choose Modify.

    Select Quick Repair first. If that doesn’t help, try Online Repair.

    Restart Your PC:

    After signing in and repairing Office, restart your computer to refresh the license status.

     

    Let me know how it goes, Happy to help!

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