Windows update not downloading.

Edale L 10 Reputation points
2026-05-09T16:38:46.7066667+00:00

Windows Update Troubleshooter failed to run on my Windows 11 laptop to determine why the latest Windows update would not download. What else can I do?

Windows for home | Windows 11 | Windows update

3 answers

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  1. Kapil Arya 38,531 Reputation points Volunteer Moderator
    2026-05-09T16:45:56.06+00:00

    Are you trying to download Windows 11 Version 25H2 update?

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    20+ people found this answer helpful.
  2. Maheswaran Shanmugavelu 40 Reputation points
    2026-10-13T14:26:44.3166667+00:00

    Microsoft also confirmed this matches their documented known issue tied to the September 14 2026 Out of Band update KB5129195, and that the fix is behaving correctly now that it is actually reaching all the VDAs.

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  3. AI answer

    2026-05-09T16:38:57.23+00:00

    Try these steps on Windows 11 when the Windows Update troubleshooter will not run or does not fix the issue:

    1. Run the Windows Update troubleshooter from Get Help
      • Open the Get Help app and run the automated Windows Update troubleshooter:
      • It will run diagnostics and attempt to repair common Windows Update problems.
    2. Run the built‑in Windows Update troubleshooter again from Settings
      • Select Start > Settings > System > Troubleshoot > Other troubleshooters.
      • Under Most frequent or Get up and running, select Windows Update > Run.
      • Restart the device when it finishes, then go to Start > Settings > Windows Update > Check for updates and try downloading again.
    3. Check disk space
      • Make sure there is enough free space for the update:
        • At least 16 GB free for a 32‑bit OS, or 20 GB for a 64‑bit OS.
      • If storage is low, free space using the guidance in Free up drive space in Windows, then try Windows Update again.
    4. If updates are stuck at 0% or 100%
      • Restart the PC to clear any blocked processes.
      • Check the internet connection:
        • Start > Settings > Network & Internet > Wi‑Fi and confirm the device is connected.
      • Run Windows Update > Check for updates again.
    5. If updates reach 51–99% and never complete
      • Wait a reasonable time (download and install time depends on connection speed and update size).
      • If still stuck, run the Windows Update Troubleshooter again and then re‑check for updates from Settings > Windows Update.

    If these steps do not resolve the issue, follow the broader guidance in Troubleshoot problems updating Windows, starting with backing up important files and then working through the general troubleshooting steps listed there.

    References:

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