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

Microsoft is warning of an issue when using a media support to install Windows 11, version 24H2, that causes the operating system to not accept further security updates.

Some Windows 11 versions are unable to receive security updates. This problem, according to Microsoft, occurs in specific versions that were installed via

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.

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.

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