How to fix this error?

Aye Chan Maung 0 Reputation points
2026-11-09T08:28:17.0033333+00:00

photo_1_2026-11-09_14-56-18

How to fix this error?

Windows for home | Windows 11 | Windows update
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  1. Emma1-N 14,920 Reputation points Microsoft External Staff Moderator
    2026-11-10T00:11:43.64+00:00

    Welcome Aye Chan Maung,

    Thanks for reaching out to Microsoft Q&A Forum. I understand that every time you open Excel, it shows an error saying it has run into a problem and needs to close, and asks if you want to repair it now.

    Could you share these details?

    • Does the error appear as soon as you open Excel, or only when you open a specific file?
    • Did it start after a recent change, such as a cleanup with CCleaner, installing WPS Office, or a Windows update?

    Please make sure you already tried the Q&A Assist steps. In addition, please try the following:

    1, Undo recent registry cleaning

    • If you have used the Registry cleaner in CCleaner, open CCleaner and restore the registry backup you saved before the cleanup.
    • If you don't have a backup, press Windows key + R, type rstrui and select OK. Choose a restore point from before the error started.

    2, Set Excel as the default app for spreadsheets

    • Open Settings, then Apps, then Default apps.
    • Search for Excel and set it as the default for .xlsx, .xls and .csv files. WPS Office can take over these file types and conflict with Excel.

    3, Clear the Excel startup folder

    • Press Windows key + R, type %appdata%\Microsoft\Excel\XLSTART and select OK.
    • Move any files in that folder to your desktop, then open Excel again.

    Looking forward to your update.

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  2. AI answer

    2026-11-09T08:28:59.71+00:00

    Run an Online Repair of Microsoft Office from Windows 11 rather than relying only on the Repair Now button in the Excel dialog.

    1. Run Online Repair

    1. Close Excel, Word, Outlook, and all other Office applications.
    2. Right-click Start and select Installed apps.
    3. Find Microsoft 365 or Microsoft Office.
      • If Excel was installed separately, find Microsoft Excel instead.
    4. Select the three dots (…) beside it, then select Modify.
    5. For a Click-to-Run installation, select Online Repair → Repair.
      • If the installer instead displays an MSI-based Change your installation window, select Repair → Continue.
    6. Complete the repair and restart Windows.
    7. Open Excel and verify that it starts without the error.

    Online Repair repairs the entire Office suite, even when only Excel is failing. It is more comprehensive than Quick Repair and may require an Internet connection.^1^

    2. If Excel still fails, test Safe Mode

    Safe Mode starts Excel without most add-ins and startup customizations:

    1. Press Windows key + R.
    2. Enter:
    excel /safe
    1. Select OK.
    2. Check whether the title bar shows Microsoft Excel (Safe Mode).

    If Excel opens successfully:

    1. Go to File → Options → Add-ins.
    2. At the bottom, select COM Add-ins under Manage, then select Go.
    3. Clear all checkboxes and select OK.
    4. Close Excel and start it normally.
    5. If it now works, enable the add-ins individually, restarting Excel after each one, until the problematic add-in is identified.^2^

    If Excel does not open in Safe Mode, the issue is not likely to be an add-in; continue with repair, updates, or reinstallation.^3^

    3. If the problem remains

    Try these in order:

    1. Update Office, if another Office application opens:
      • Open Word or another Office app.
      • Go to File → Account → Update Options → Update Now.
    2. Update Windows 11:
      • Open Start → Settings → Windows Update.
      • Select Check for updates, install available updates, and restart.
    3. Reinstall Office if Online Repair and updates do not resolve it:
      • Before uninstalling, confirm that the Microsoft 365 subscription or Office license is associated with the Microsoft account used to install it.
      • Uninstall Office, restart Windows, and reinstall it from that account. Microsoft lists reinstallation after updates, add-in troubleshooting, and Office repair for persistent startup failures.^3^

    References

    1. Windows 11
    2. Excel not responding, hangs, freezes or stops working
    3. I get a "stopped working" error when I start Office applications on my PC | Microsoft Support
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