Microsoft has shared a workaround for users affected by a known issue that blocks Windows security updates from deploying on some Windows 11 24H2 systems.
As the company explained when it acknowledged the bug in December, it only occurs when installing Windows 11 from CDs and USB flash drives that also install the October 2024 or November 2024 cumulative updates.
"When using media to install Windows 11, version 24H2, the device might remain in a state where it cannot accept further Windows security updates," Microsoft says.
"This occurs only when the media is created to include the October 2024, or November 2024, security updates as part of the installation (these updates were released between October 8, 2024 and November 12, 2024)."
However, these deployment problems do not impact security updates delivered via Windows Update and the Microsoft Update Catalog or if the installation media comes with security updates released in December 2024 or later.
While Redmond said it was working on a fix, it updated the Windows release health dashboard on Thursday to tag the known issue as resolved and advise affected users to reinstall Windows 11, version 24H2, on their systems using media that includes security updates released since December 2024 to avoid experiencing these problems.
"To prevent this issue, do not install Windows 11, version 24H2 using media that installs the October 2024 or November 2024 security updates," the company states.