Microsoft drops emergency Home windows 11 replace, fixing USB enter bug
Microsoft has responded to a significant issue with Home windows 11, the place putting in replace KB5066835 can break USB keyboards and mice, stopping them from working within the Home windows Restoration Surroundings (WinRE) and leaving you unable to do something.
As of yesterday, Microsoft has launched two emergency out-of-band updates to deal with the difficulty: KB5070762 and KB5070773, that are each for Home windows 11 24H2 and 25H2. Preserve studying for extra particulars on the underlying challenge and these hotfixes.
USB enter units fail after replace
The problem impacts programs working Home windows 11 model 24H2 or 25H2 in addition to Home windows Server 2025. After putting in the October replace (KB5066835), USB keyboards and mice and different enter units not work correctly within the restoration atmosphere. This meant customers had been not capable of restore PCs or reset Home windows.
The 2 updates that repair the difficulty
Microsoft confirmed the bug and rapidly introduced an emergency replace to right the defective driver initialization challenge.
- KB5070762 is the so-called Secure OS Dynamic Replace, which instantly repairs the WinRE elements of Home windows 11.
- KB5070773 is a supplementary cumulative replace (Builds 26100.6901 and 26200.6901) which addresses the identical bug on programs the place the Secure OS replace doesn’t take impact routinely.
Each updates handle the identical drawback, guaranteeing that USB keyboards, mice, and dongles work once more within the restoration atmosphere. Microsoft emphasizes that no different modifications are made to the system and no reboot is required with these updates.
The emergency updates are distributed routinely through Home windows Replace, however can be downloaded manually from the Microsoft Replace Catalog if wanted (KB5070762 and KB5070773). Microsoft recommends that firms promptly set up these updates to keep away from attainable assist failures throughout system restoration.
This text initially appeared on our sister publication PC-WELT and was translated and localized from German.

