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

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.

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

Microsoft re-affirms the implications of installing Windows 11 on devices that don't have the proper hardware.

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.

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,