Microsoft has acknowledged a significant issue affecting users of Windows 11 version 25H2 (2025 Update) after installing security update KB5066835, released on October 14. This bug disrupts the functionality of USB mice and keyboards within the Windows Recovery Environment (WinRE). The malfunction occurs when users access WinRE, which can be triggered by multiple failed startup attempts or manually interrupting the boot process. While USB devices work normally in the Windows environment, they fail in WinRE, complicating troubleshooting efforts. Microsoft is working on a fix, promising a resolution "in the coming days." Additionally, users have reported other issues related to smartcard authentication, failures of the Windows Update Standalone Installer, and difficulties with server-side applications dependent on Internet Information Services (IIS).