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Can not download update KB5077181 error code Ox800f0991

Frank Wills 20 Reputation points
2026-02-16T15:50:02.4233333+00:00

Can not install KB5077181 error code Ox800f0991 have tried several times but keeps coming up retry

Microsoft Edge | Install and update | Windows 11
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  1. Luboš Motl 210 Reputation points
    2026-02-17T14:03:11.87+00:00

    Frank, the error 0x800f0983 was shown to lots of people after trying to install the KB5077181 February monthly patch for Windows 11. Later, the error switched to the number with 991 at the end, you just got the same problem and you are not alone. All these people including me with my Vivobook tried all possible deletion of SoftwareDistribution, catroot2 folders, restarting WU related services, SFC, DISM with Scanhealth, Checkhealth, Restorehealth, without source, with source at Windows Update, and even with the full ISO source, and the MSU patch from Microsoft Catalog. Everything fails.

    However, all ten+ people who have tried have succeeded a miraculous cure using a new Windows 11 tool. It is in Settings, System (in the left sidebar), Recovery (a right sidebar option), and "Fix Problems Using Windows Update" (second tool in the right sidebar). Click "reinstall now" and don't be afraid of the terrifying verb. It preserves apps, files, and settings. Except for asking whether you want an automatic restart at the end, it is nothing else than a Windows Update process (and has a similarly robust rollback cure if something goes wrong in the middle), just the patch is called "Windows 11 Recovery Edition". And it takes twice as long because it is really installing even things that the regular light Windows Update (incorrectly) decides that your PC does not need (that is really why these 800f errors appear). For me, a fast WiFi downloaded it in 10 minutes, followed by 55 minutes "installing" inside Windows, otherwise like a regular patch, and just 5 minutes of black-screen installation phase outside Windows, plus 2 extra minutes after the first login to a user profile. And when it was completed, I had the newest post-February-patch level of Windows 11.

    You should simply do it, trust me, you are no longer a beta tester, this tool simply works (10 out of 10 confirm) and frankly speaking, it may be better to use it after any error of Windows Update.

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  1. Ramesh Srinivasan 74,275 Reputation points Independent Advisor
    2026-02-16T16:23:06.23+00:00

    Hi Frank,

    The error 0x800f0991 is caused by missing files in the component store. Please run the following command from the admin Command Prompt.

    dism /online /cleanup-image /restorehealth
    

    If that doesn't resolve the issue, try repairing Windows 11 through the Settings app.

    Open Settings > System > Recovery. Under "Fix problems using Windows Update", select "Reinstall now."

    This performs a repair installation, keeping your files, apps, and settings intact.

    See:

    Fix issues by reinstalling the current version of Windows - Microsoft Support: https://support.microsoft.com/en-us/windows/fix-issues-by-reinstalling-the-current-version-of-windows-497ac6da-7cac-4641-82a5-f50398d879a0

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  2. Frank Wills 20 Reputation points
    2026-02-16T15:51:58.72+00:00

    Can not download windows update KB5077181 error code Ox800f0991

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