Microsoft has deployed an out-of-band emergency update addressing a critical bug that rendered USB keyboards and mice non-functional within Windows 11’s recovery system. The issue emerged after the company’s recent Patch Tuesday security updates, preventing users from accessing recovery options. The new cumulative update reportedly resolves the USB connectivity problem while maintaining previous security enhancements. 
Emergency Update Deployed for Critical Input Failure
Microsoft has reportedly released an emergency out-of-band update designated KB5070773 to address a critical functionality issue affecting USB input devices within the Windows Recovery Environment. According to reports, the problem emerged following the October 14, 2025, Patch Tuesday update (KB5066835), which inadvertently broke USB keyboard and mouse functionality in WinRE, leaving users unable to navigate recovery options.