how do I repair Excel office 365?

scott805 0 Reputation points
2026-09-09T05:21:47.71+00:00

User's image I keep getting this Microsoft Excel warning "We're sorry, but Excel has run into an error that is preventing it from working correctly. Excell will need to be closed as a result. Would you like to repair now?" I choose "Repair Now" option, but nothing happens, and then minutes later Excel shutsdown while I am working and it doesn't save my progress. Also at the top left the Window title bar says "Excel (Unlicensed Product). Why does this happen and how can I fix it?

Microsoft 365 and Office | Excel | For home | Windows
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  1. DaveM121 928.6K Reputation points Independent Advisor
    2026-09-09T05:57:40.2966667+00:00

    1

    The 'Repair Now' button on that error popup dialog only performs a quick repair of the Office apps and that rarely resolves the problem with the Office apps, the best option is to perform a full online repair of your Office installation.

    Before performing this process, please log into your Microsoft account on this link (https://account.microsoft.com/services/) and check to ensure your Office licence or Microsoft 365 subscription is listed correctly on your account.

    Open the Settings App (gear icon on your Start Menu)

    Go to Apps - Installed Apps, then scroll down to find Microsoft Office

    Select that and choose Modify - Online Repair

    That should fix any issues with your Office Installation.

    2

    Your also mention at the top of Excel it indicates 'Unlicensed Product'.

    If the online repair does not also resolve that problem.

    Open Excel, then go to File - Account, please provide a screenshot of that window, and please hide your Email address in the screenshot.

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  2. AI answer

    2026-09-09T05:22:06.52+00:00

    The built-in Repair Now prompt often does not fully fix this issue. The supported fix is to run an Office Online Repair from Windows.

    1. Close Excel and all other Office apps.
    2. In Windows:
      • Windows 11: right-click Start > Installed apps
      • Windows 10: right-click Start > Apps and Features
    3. Find Microsoft 365 or Office in the list.
    4. Select it, then choose Modify.
    5. In How would you like to repair your Office Programs:
      • choose Online Repair > Repair
      • if the install is MSI-based, choose Repair > Continue
    6. Follow the on-screen steps.
    7. Restart the PC when the repair finishes.

    Important details:

    • This repairs the entire Office suite, not just Excel.
    • Online Repair is more complete than Quick Repair. Quick Repair only detects and replaces corrupted files.
    • If restarting alone did not help, Microsoft recommends repair as the next step.

    If Excel still opens to a blank screen or continues failing after Online Repair, use the Contact us option from the Excel support article.

    About “Unlicensed Product”:

    • The provided material confirms the error and repair steps, but it does not include a supported cause or fix for the licensing state shown in the title bar.
    AI-generated content may be incorrect. Read our transparency notes for more information.

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