Windows 11 update glitch

The latest preview update for Windows 11 has introduced a glitch in Task Manager, preventing it from closing properly and resulting in multiple background instances that consume system resources. This issue arose after the October 2025 optional update (Build 26200.7019 / 26100.7019), causing Task Manager to remain active in the background and launch additional instances upon reopening. While not affecting every user, many have reported encountering this bug. Users are advised to avoid using the “X” button to close Task Manager and instead use alternative methods such as ending the task from within Task Manager, restarting Windows Explorer, or using Command Prompt or PowerShell to force-close Task Manager instances. Microsoft is expected to address this issue in a future update. Users may also consider uninstalling the October 2025 update if the problem significantly impacts performance.