Windows 11 Insider Preview Feature Update (26220.9022) Failed to install on ‎8/‎14/‎2026 - 0x800700b7

Kaigh Taylor 0 Reputation points
2026-08-17T03:05:19.7866667+00:00

I have attempted to update my Windows Insider Beta Preview Feature Update 5 times, and it failed with the same result every time. Now, Windows is reporting to me that the version on my computer is about to expire. How do I fix this. When I go the https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewiso link, I get a message saying "To access this page, you need to be a member of the Windows Insider program." I have been an insider for over a year. And I checked the same account that is signed up for the insider program is the account I am logged into on the page. I am at a loss as to what to do besides a reset.

Windows Insider program | Windows Insider preview | Install, activate, and Windows update
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  1. Michael Sendner 0 Reputation points
    2026-11-06T10:21:33.1233333+00:00
    1. C:\$WINDOWS.~BT\Sources\Panther\setuperr.log
    2. C:\$WINDOWS.~BT\Sources\Panther\setupact.log

    beide log´s sind nicht vorhanden.

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  2. Alex-L 13,280 Reputation points Microsoft External Staff Moderator
    2026-08-19T13:58:45.9766667+00:00

    Hi Kaigh Taylor

    Since the update is failing repeatedly with error 0x800700B7 rather than simply not being offered, it may help to determine where the failure occurs (download, install, first reboot, or rollback). Please check Settings > Windows Update > Update history for the exact failure entry and share any additional error details.

    Also, if the build is approaching expiration and Windows Update continues to fail, review the upgrade logs:

    • C:\$WINDOWS.~BT\Sources\Panther\setuperr.log
    • C:\$WINDOWS.~BT\Sources\Panther\setupact.log

    These logs often identify the component or driver causing the upgrade failure. Similar Insider update issues have also been resolved by temporarily disconnecting non-essential USB devices and disabling third-party security software before retrying. The release notes for Build 26220.9022 also mention fixes for some upgrade rollback scenarios.

    If the Insider Preview ISO site reports that you're not enrolled even though you're using the correct Microsoft account, that may be a separate account-recognition issue from the update failure itself. In that case, verify the same account is shown under Settings > Windows Update > Windows Insider Program and consider signing out and back into both the Insider Program site and the ISO download page. The account used for the download must be recognized as enrolled in Windows Insider.

    As this is a public forum, please do not post email addresses, product keys, account identifiers, or log contents that contain personal information.

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  3. AI answer

    2026-08-17T03:05:34.77+00:00

    Use the standard Insider update checks first, because build 26220.9022 is the current Beta build and updating to the latest build refreshes the expiration.

    1. In Settings > Windows Update > Windows Insider Program, confirm the device is still enrolled and the selected channel is Beta.
    2. In Settings > System > Activation, confirm Windows is activated.
    3. In Settings > Windows Update, select Check for updates again and leave the device powered on and signed in outside active hours so installation can complete.
    4. In Settings > Windows Update > Windows Insider Program, if prompted, enable diagnostic data by opening Diagnostics & feedback and turning Send optional diagnostic data to On.
    5. Check whether the device is already on the latest build for the Beta channel by comparing against Flight Hub.
    6. Check recent Insider flight posts for known issues that might block the update.

    If the device still does not receive or install the update, the documented next step is a clean install using a Windows Insider Preview ISO. A clean install resets the device, so back up files first.

    If the build is nearing expiration, go to Settings > Windows Update and select Check for Updates. If no update appears, settings may need adjustment or a clean install may be required.

    A Microsoft Q&A answer for this exact expiration scenario states that the latest Beta build with the new expiration date is 26220.9022.

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

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