Fix the latest update!

Rene Miller 0 Reputation points
2026-09-16T10:27:02.58+00:00

I cannot use File History as it does not recognize it. and audio does not play on Reels in Facebook. Where do I uninstall uninstall 2026-09 Security Update (KB5124008) (26200.9445)? Please help.

Windows for home | Windows 11 | Windows update
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  1. DaveM121 933.1K Reputation points Independent Advisor
    2026-09-16T11:01:28.9+00:00

    The File History bug and Audio bug is widely reported in the September KB5124008 update, Microsoft have indicated they released an out-band update (KB5129195) to resolve the audio problems and they are working to resolve the File History problems.

    If you want to uninstall the September update, open the Settings App, go to Windows Update - Update History, then scroll to the bottom of that window and click Uninstall Updates, from there you can uninstall the September update.

    Or you can install the out-of-band update to test if that resolves the audio problems, then wait for them to release a patch for the File History bug.

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  2. DaveM121 933.1K Reputation points Independent Advisor
    2026-09-17T05:24:56.8533333+00:00

    If you are unable to uninstall the update, then you just need to wait for Microsoft to release a patch that will fix the File History bug in that update.

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  3. Rene Miller 0 Reputation points
    2026-09-16T19:47:00.26+00:00

    It does not let me uninstall this update. Says that some updates are not permitted to be uninstalled.

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  4. ApexNáV 360 Reputation points
    2026-09-16T11:03:02.7166667+00:00

    This issue has already been reported by several other users. You will likely need to uninstall the update to fix the issue that it causes. The KB5124008 update fixes a large number of vulnerabilities, including actively exploited zero‑days. Uninstalling it significantly reduces your security posture, so you should only uninstall it if File History (or other critical features) still don’t work and you need them. Here are the release notes: https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5124008-windows-11-24h2-25h2-security-update

    In case you want to uninstall:

    1. Open Settings > Windows Update > Update history > Uninstall updates.
    2. Uninstall KB5124008

    Windows may try to reinstall the update automatically. If you want to prevent that while still receiving other updates, I recommend using the Show or hide updates troubleshooter (wushowhide.diagcab). Here is the link: https://download.microsoft.com/download/f/2/2/f22d5fdb-59cd-4275-8c95-1be17bf70b21/wushowhide.diagcab

    • Open this tool and make sure you have internet access
    • Click on "Hide Update" (If you later want Windows to install the updates you hid, come back to this screen and click Show hidden updates.)
    • Select this KB5124008 update and click next
    • This update will be shown as fixed on the next screen.
    • Now restart and resume windows update.

    Alternatively, if you don’t want to uninstall this update, you can wait for Microsoft to release a fix in a future update.

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  5. AI answer

    2026-09-16T10:27:17.2633333+00:00

    KB5124008 can be uninstalled from Settings:

    1. Select Start > Settings > Windows Update.
    2. Select Update history under More options.
    3. Under Related settings, select Uninstall updates.
    4. In the list, find 2026-09 Security Update (KB5124008).
    5. Select it, then choose Uninstall.

    If Windows does not start normally, uninstall it from Windows Recovery Environment:

    1. Open Windows RE.
    2. Select Troubleshoot > Advanced options > Uninstall Updates.
    3. Select Uninstall latest quality update.

    Important: uninstalling a security update has risks, including reduced protection against known vulnerabilities, possible service disruption, loss of future support, and potential data loss.

    For the audio issue after a Windows update, these steps are also supported:

    1. Go to Start > Settings > Windows Update and select Check for updates.
    2. Restart the device after installing available updates.
    3. If audio still fails, open Device Manager > Sound, video and game controllers.
    4. Right-click the audio device and select Update driver.
    5. If needed, open the device Properties > Driver tab > Roll Back Driver.
    6. If audio services are stuck, run services.msc, then restart Windows Audio and Windows Audio Endpoint Builder.

    KB5124008 is a known update where some USB Audio Class 1.0 devices might fail to start or produce no sound, including Code 10 in Device Manager. Microsoft states that an out-of-band update KB5129195 partially resolves issues affecting devices using 8-channel or 3D audio modes.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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