Windows Task Manager Bug Fixed in November Update
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Microsoft has resolved a bug in the Windows 11 Task Manager that prevented it from fully terminating after being closed. The issue, introduced by the optional KB5067036 update, caused multiple instances of Task Manager to run in the background, leading to performance degradation. The fix is included in the November KB5068861 security update.
Timeline
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12.11.2025 12:42 1 articles · 23h ago
Microsoft fixes Windows Task Manager bug in November update
Microsoft has resolved a bug in the Windows 11 Task Manager that prevented it from fully terminating after being closed. The issue, introduced by the optional KB5067036 update, caused multiple instances of Task Manager to run in the background, leading to performance degradation. The fix is included in the November KB5068861 security update.
Show sources
- Microsoft fixes Windows Task Manager bug affecting performance — www.bleepingcomputer.com — 12.11.2025 12:42
Information Snippets
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The bug prevented Task Manager from fully terminating after being closed, causing multiple instances to run in the background.
First reported: 12.11.2025 12:421 source, 1 articleShow sources
- Microsoft fixes Windows Task Manager bug affecting performance — www.bleepingcomputer.com — 12.11.2025 12:42
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The issue was introduced by the optional KB5067036 update released on or after October 28, 2025.
First reported: 12.11.2025 12:421 source, 1 articleShow sources
- Microsoft fixes Windows Task Manager bug affecting performance — www.bleepingcomputer.com — 12.11.2025 12:42
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Multiple background instances of Task Manager could cause noticeable slowdowns in other applications.
First reported: 12.11.2025 12:421 source, 1 articleShow sources
- Microsoft fixes Windows Task Manager bug affecting performance — www.bleepingcomputer.com — 12.11.2025 12:42
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Microsoft has resolved the bug in the KB5068861 November Windows security update.
First reported: 12.11.2025 12:421 source, 1 articleShow sources
- Microsoft fixes Windows Task Manager bug affecting performance — www.bleepingcomputer.com — 12.11.2025 12:42
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Users can manually quit background processes using the command 'taskkill.exe /im taskmgr.exe /f' in Command Prompt.
First reported: 12.11.2025 12:421 source, 1 articleShow sources
- Microsoft fixes Windows Task Manager bug affecting performance — www.bleepingcomputer.com — 12.11.2025 12:42