Continually fails to complete Microsoft Update

Teresa Gillroy 0 Reputation points
2026-09-02T17:57:08.2566667+00:00

A prior question is the same as I am experiencing. I am always being asked to keep computer on for update, which goes on ad on. Usually only reaches 90%. I can still use the computer, but cannot get update.

Please advise. Using a Dell Laptop.

Windows for home | Other | Windows update

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  1. AI answer

    2026-09-02T17:57:25.11+00:00

    If Windows Update keeps looping, reaches around 90%, and does not complete, use this sequence:

    1. Check internet and power
      • Go to Start > Settings > Network & Internet > Wi‑Fi.
      • Confirm the laptop is connected to a stable network.
      • Keep the Dell laptop plugged into power during the update.
    2. Make sure the account has administrator access
      • Some updates require administrator permissions to install.
    3. Disconnect non-essential external hardware
      • Remove USB drives, docks, and other external devices not needed for basic use.
    4. Run the Windows Update troubleshooter
      • On newer Windows settings layout: Start > Settings > System > Troubleshoot > Other troubleshooters > Windows Update > Run.
      • On older layout: Start > Settings > Update & Security > Troubleshoot > Additional troubleshooters > Windows Update > Run the troubleshooter.
    5. Clear the Windows Update cache
      • This can help when update files are corrupted or stuck.
      • Press Win + R, type services.msc, and press Enter.
      • Right-click Windows Update and select Stop.
      • Go to C:\Windows\SoftwareDistribution.
      • Delete the files and folders inside.
      • Return to Services, right-click Windows Update, and select Start.
    6. Check free disk space
      • Windows needs at least 16 GB free for a 32-bit OS or 20 GB for a 64-bit OS to upgrade.
      • If storage is low, free space and try again.
    7. Update third-party drivers
      • Since the device is a Dell laptop, check the hardware manufacturer’s site for updated drivers, then try Windows Update again.
    8. Run Windows Update again
      • Go to Start > Settings > Windows Update > Check for updates.
      • On some versions: Start > Settings > Update & Security > Windows Update > Check for updates.
    9. Restart to apply updates
      • Use Start > Power > Update and restart or Update and shut down if shown.

    If the update repeatedly gets stuck between 51% and 99%, Microsoft notes that this can be caused by connection speed, network settings, or update size. In that case, checking for updates again or running the troubleshooter is recommended.

    If the issue continues, a Microsoft Q&A accepted answer also recommends using:

    • Settings > System > Recovery > Reinstall now in Fix problems with Windows Update.

    Note: deleting files in C:\Windows\SoftwareDistribution removes cached update files only, but the steps should be followed carefully.

    References:

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  2. Igor Leyko 112.1K Reputation points Independent Advisor
    2026-09-02T18:34:16.28+00:00

    Please check update journal for the error code.

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