MS Office 2019 is not working

Mukesh Yadav 0 Reputation points
2026-11-12T04:42:21.6033333+00:00

Showing this error when opening any of the MS office product. Facing this problem after installation of following windows update "2026-11 Security Update (KB5132061) (26300.9974)"

Microsoft 365 and Office | Other

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  1. Lychee-Ng 30,830 Reputation points Microsoft External Staff Moderator
    2026-11-12T10:05:56.24+00:00

    I know how confusing this seems, Mukesh Yadav.

    Just wondering, have you checked out the suggestions in the AI answer below? And what's the result? Did you run the Online repair to your Office 2019 edition yet? Before attempting any fixes, remember to make sure your license is listed correctly on your Microsoft account. Then on your PC:

    • Open Settings (gear icon on your Start Menu or pressing Win + I)
    • Go to Apps > Installed Apps > search for Office 2019
    • Click the three-dot > Modify > Online Repair
    • That should fix any issues with your Office Installation.

    Since Office 2019 already reached end of support, sometimes newer updates aren't meant for it can cause conflicts. Once it's working again, consider turning off automatic updates if you haven't. You can check it yourself every so often and only install the ones that apply to Office 2019. Do keep Windows itself up to date though.

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  2. AI answer

    2026-11-12T04:47:45.89+00:00

    Repair the Windows component files with DISM and SFC, then run an Online Repair of Office 2019; do not download or manually replace the reported DLL from a third-party website.

    KB5132061 does not list an Office 2019 or sppc.dll publisher-warning issue among its known issues, so the timing alone does not establish that the update caused it.^1^

    1. Repair Windows system components

    The message refers to a DLL whose publisher or integrity Windows cannot confirm. Open Start, type Command Prompt, right-click it, and select Run as administrator.

    Run these commands in order:

    DISM.exe /Online /Cleanup-Image /RestoreHealth
sfc /scannow

    Wait for DISM to complete before starting SFC, and do not close the window until SFC reaches 100%.^2^

    Then:

    1. Restart Windows.
    2. Open Word, Excel, and PowerPoint.
    3. Check whether the publisher warning has disappeared.

    If SFC says it found files but could not repair some of them, do not manually copy sppc.dll or sppcdll from another computer or download site. Record the complete SFC result for further Windows repair.

    2. Repair the entire Office 2019 installation

    If the warning remains:

    1. Right-click Start and select Installed apps.
    2. Find Microsoft Office 2019.
    3. Select the … menu, then Modify.
    4. For a Click-to-Run installation, select Online Repair > Repair.
      For an MSI installation, select Repair > Continue.
    5. Restart Windows after completion.

    Online Repair is preferable here because Quick Repair only detects and replaces certain corrupted files; repairing Office from this location repairs the complete suite.^3^

    3. Check whether Smart App Control generated the warning

    Open Windows Security > App & browser control > Smart App Control settings and note whether it is On, Evaluation, or Off. Smart App Control checks application reputation and valid signatures and warns when a component is untrusted.^4^

    Do not turn it off merely to suppress this warning. Once manually switched off, it cannot return to Evaluation mode without resetting or reinstalling Windows. If this is an organization-managed device, provide IT with:

    • the exact DLL name and full path shown by the warning;
    • the affected Office applications;
    • the DISM and SFC results;
    • whether Online Repair corrected the problem.

    Also verify whether the message says sppc.dll rather than sppcdll; the exact filename and path are important for identifying the blocked component.

    4. Update removal is a temporary diagnostic only

    If DISM/SFC and Office Online Repair both fail, and the issue started immediately after KB5132061, uninstalling that update can test whether the behavior is update-dependent:

    Settings > Windows Update > Update history > Uninstall updates > KB5132061 > Uninstall

    Removing a security update reduces protection, and some updates cannot be uninstalled. Reinstall the latest Windows update afterward rather than leaving the computer unpatched.^5^

    Support status

    Office 2019 can run on Windows 11, but its support ended on October 14, 2025. It no longer receives Microsoft technical support, bug fixes, or security fixes, so a newer supported Office release is the long-term resolution if this compatibility problem persists.^6^

    References

    1. November 10, 2026—KB5132061 (OS Builds 26300.9974, 26200.9974 and 26100 ...
    2. Use the System File Checker tool to repair missing or corrupted system files | Microsoft Support
    3. Repair an Office application
    4. App & browser control in the Windows Security App | Microsoft Support
    5. [Windows 11](https://support.microsoft.com/windows/deployment/updates-lifecycle/how-to-uninstall-a-windows-update#summary)
    6. End of support for Office 2016 and Office 2019 | Microsoft Support
    AI-generated content may be incorrect. Read our transparency notes for more information.

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