Windows 11 KB5067036 issue: Task Manager won’t close and duplicates, may hurt performance

Windows 11 KB5067036 Issue: Task Manager Won't Close and Duplicates

Windows 11 KB5067036 has a bug that causes the Task Manager instance to duplicate every time it is closed, potentially hurting PC performance.

The update, released on October 28, includes a new Start menu, colorful battery icons, and a Recommended feed in File Explorer. However, it also introduced the Task Manager issue, which has been reported by 30% of 100 virtual machines tested.

Microsoft hasn’t acknowledged the reports yet.

Author's summary: Windows 11 KB5067036 has a bug causing Task Manager duplication.

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Windows Latest Windows Latest — 2025-10-29