Fortunately, there's a workaround.
The fix is for a bug that prevents some systems from shutting down, while another bug that prevents hibernation has no ...
Microsoft was forced to release an emergency update after the first Windows 11 update of 2026 stopped some computers from shutting down or hibernating.
Microsoft delivers a fix for the Windows 11 issue that prevented PCs from shutting down after installing a security update.
It just requires a single patch.