Microsoft has confirmed an unusual warning for Windows users updating their PCs. If you make a simple mistake, your PC “might remain in a state where it cannot accept further Windows security updates.” Bad news, especially as it will clearly be confusing if and when it happens.

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,

Microsoft has recently found a strange bug in some Windows 11 installations. This may prevent certain users from receiving important security updates. And unfortunately, all it takes to trigger this glitch is to install Windows from a CD or USB drive.

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.

Security updates are broken for Windows 11 PCs installed with physical media using the October 2024 and November 2024 updates, but there is a fix.

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