Microsoft has acknowledged a bug in the October 2025 Windows 11 update (KB5067036) that prevents the Task Manager from fully closing, leading to multiple background processes that can slow down the system. A temporary fix involves manually ending the processes via Command Prompt, while Microsoft is investigating a permanent solution. The update also includes other fixes, such as improvements to the Media Creation Tool and error resolutions.
A recent Windows 11 update causes the Task Manager to malfunction by not closing properly and spawning multiple instances, which can lead to increased RAM and CPU usage, potentially impacting system performance and battery life.
Microsoft has confirmed that the October 2025 update for Windows 11 (KB5066835) causes a bug that disables mouse and keyboard functionality in the Windows Recovery Environment (WinRE), making it unusable. The issue affects navigation within WinRE, although USB devices still work within the main OS. Microsoft is investigating and plans to release an out-of-band update to fix the problem. As a temporary workaround, users can revert to an older version of the WinRE image or uninstall the problematic update.
Microsoft's October 2025 Windows 11 update (KB5066835) has caused a critical bug that breaks localhost functionality for developers, traced to HTTP.sys, with workarounds including uninstalling the update or disabling HTTP/2. Microsoft has not yet acknowledged the issue, which seems to be related to system configuration conflicts rather than a universal bug, and the problem is causing widespread frustration among developers.
Microsoft confirmed that the August 2025 security update (KB5063878) causes severe lag and performance issues in Windows 11 and Windows 10, particularly affecting NDI streaming applications. The problem stems from interference with the RUDP protocol, leading users to recommend switching NDI's transport mode to TCP or UDP as a temporary workaround. Microsoft is investigating a permanent fix, but until then, affected users should consider delaying the update or applying the workaround to prevent disruptions.
