The bug specifically impacts Windows 11 24H2 installations created using manually prepared media with security updates from October or November 2024. Affected systems cannot accept future Windows security updates, which means the devices can be exposed to vulnerabilities, as reported by Bleeping Computer.

Microsoft has clarified that this issue only applies to users who installed the Windows 11 24H2 update using a USB drive or CD

Windows 11 24H2 is more stable than any release of Windows 11, but a bug causes installation issues with new cumulative updates.

Microsoft's official 24H2 update for Windows 11 has been saddled with one bug after another. Here's why you might want to avoid updating and what you may find if you jump into the new version now.

This is just the latest in a long string of issues for the most recent release of Windows 11. The 24H2 release has been plagued with problems, including broken Auto HDR, busted USB scanners, wonky USB audio, problems with Outlook, major issues with certain Ubisoft games, and various other SNAFUs with specific hardware and software configurations.

To fix the problem, Microsoft says users will have to reinstall Windows 11 24H2 with the latest December security patch.

Microsoft is warning users that some manually made Windows 11 installer media could contain a bug where new PC installs may not get future security updates. It affects USB and CD installers made with October and November release patches,

Installing some recent versions of Windows 11 could leave you vulnerable to security issues due to an update flaw; here's how to avoid the problem.

Windows updates are crucial but can sometimes cause issues like preventing future security patches. Windows 11 has a bug that stops further security updates after installing 24H2 via USB/CD. Microsoft suggests not using USB/CD to install the 24H2 update,