update 2026-01 Security Update (KB5074109) (26200.7623) won't activate or install

Gary L Smith 5 Reputation points
2026-01-16T17:01:34.88+00:00

Your latest update is a dog. It won't activate or download. Apparently it is common knowledge. What's up? Why wont Microsoft fix it internally?

Windows for home | Windows 11 | Windows update
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  1. John DeV 156.5K Reputation points Independent Advisor
    2026-01-17T00:22:41.6266667+00:00

    Hi, good day!

    Please let me know if you have tried the methods below.

    If the issue persists, open Settings > System > Recovery.

    Few things to check on the PC

    • Unplug all external peripherals except for the Mouse, Keyboard, and LAN cable before starting
    • Disable or uninstall any third-party Antivirus program to prevent it from interfering with the upgrade

    Under Fix problems using Windows Update, click Reinstall Now

    Once completed, your system will restart.

    I look forward to receiving your update and I'm willing to collaborate with you till we resolve the issue. Do keep me informed by clicking "Add comment" below.


    Standard Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

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  2. Garen Loshkajian 0 Reputation points
    2026-01-19T23:00:26.9333333+00:00

    Fix problems using Windows Update fixed the 0x800f0991 error I was getting with the 2025-12 and the 2026-01 security updates on my Dell 16 Premium

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