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Windows 11 24H2/25H2 Update Breaks Mouse and Keyboard in Recovery Mode

Microsoft has released a cumulative update for Windows 11, identified as KB5066835, on October 14, 2025. This update impacts Windows 11 versions 24H2 and 25H2, as well as Windows Server 2025, and introduces significant issues in the Windows Recovery…

ABy Adam FosterOct 20, 20251 min read

Microsoft has released a cumulative update for Windows 11, identified as KB5066835, on October 14, 2025. This update impacts Windows 11 versions 24H2 and 25H2, as well as Windows Server 2025, and introduces significant issues in the Windows Recovery Environment (WinRE).

The primary concern associated with this update is the malfunction of USB keyboards and mice within WinRE. While these input devices operate normally during standard Windows sessions, they become unresponsive in the recovery environment, making it impossible to navigate menus or execute commands. This issue severely restricts access to essential recovery options, such as "System Restore," "Startup Repair," and "Reset this PC."

Input devices function in the operating system but fail in WinRE. Essential recovery options are inaccessible without working USB peripherals.

Microsoft acknowledged these issues on October 17, 2025, and confirmed the impact on users attempting system recovery. This bug poses a risk for IT administrators, as it can exacerbate server issues by making recovery tools inaccessible.

Microsoft has released a cumulative update for Windows 11, identified as KB5066835, on October 14, 2025.
Adam Foster · Thehackingpost

Users have reported experiencing additional problems following the installation of KB5066835:

Failures in localhost connections, affecting local application development and testing. File Explorer’s preview pane hangs or displays blank windows, impacting workflow efficiency. System performance issues, including delayed app launches and erratic multitasking. Installation failures with error codes, leading to manual rollback requirements.

These issues have resulted in decreased productivity across various hardware profiles, from consumer laptops to enterprise servers.

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Microsoft's Response and Recommendations

Microsoft is currently developing a fix for the issues introduced by KB5066835, with a release expected soon. In the interim, users are advised to avoid entering WinRE. For necessary system recovery actions, it is recommended to use separate installation media, where peripherals should function correctly.

As a temporary measure, affected users can uninstall the update through the "View update history" section in Settings. However, this will remove the latest security patches, leaving systems potentially vulnerable. Users should monitor official Microsoft channels for updates on the forthcoming fix.

Based on reporting by GBHackers.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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