Microsoft has taken swift action to address a significant issue stemming from its recent Windows 11 security update (KB5066835). Following the rollout, users reported that essential USB devices, including keyboards and mice, became non-functional when accessed through the Windows Recovery Environment (WinRE). In response to this widespread inconvenience, the tech giant opted for an out-of-band update, rectifying the flaw just six days after its initial release, rather than waiting for the next scheduled patch.
This fix is currently being distributed via Windows Update for all Windows 11 users. The flaw affects versions 24H2 and 25H2 of Windows 11, as well as Windows Server 2025. For those who have not yet installed the update, it may be prudent to refrain from resetting your PC or entering recovery mode until further notice.
Windows 11 Update Riddled with Issues
The USB support bug in WinRE is not the sole concern arising from the October update. Microsoft has compiled a comprehensive list of known issues, which includes:
- Smartcard authentication problems
- Challenges in playing protected content with certain DVD and BluRay applications
- Failed updates when using shared network folders
- Potential loading failures for IIS websites
Additionally, Microsoft has indicated that the smartcard authentication issues stem from a security change aimed at enhancing Windows Cryptographic Services. While this particular flaw has been resolved, the IIS website issue remains unaddressed.
Repeated Bugs
In recent months, Microsoft has faced a series of bugs associated with its updates. In August, Windows 11 users experienced malfunctions with their SSDs following a Patch Tuesday update, which led to another out-of-band update to remedy reset and recovery operation issues. Earlier in April, the company acknowledged a “latent code issue” within its enterprise device management software, Intune, which inadvertently upgraded devices against corporate policies.
Last year, a bug caused users of older Windows Server versions to receive an unexpected upgrade to the 2025 version at no cost, which in turn introduced its own set of issues, including system crashes. Furthermore, Microsoft had to retract a preview of a Windows 11 update before its full release due to problems identified within the Windows update process, with some users reporting crashes.
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