Windows 11 is reportedly making more Task Managers whenever you close one

Windows 11 Bug Causes Multiple Task Manager Instances

Windows 11 appears to have a strange new bug where closing Task Manager results in another Task Manager opening automatically. Instead of disappearing, each closed window triggers the creation of a new one, filling the system with multiple instances of Task Manager.

How the Bug Manifests

When users click the "X" button to close Task Manager, a new instance launches in the background. Pressing the Task Manager hotkey also creates a fresh one, which itself spawns another upon closing. Repeating this action quickly fills the processes list with numerous Task Manager windows consuming system resources.

Impact on Performance

Windows Latest tested the issue by opening and closing Task Manager about 100 times, resulting in around 100 instances running simultaneously. Each instance used approximately 20–25 MB of RAM, totaling roughly 2 GB of memory. This memory usage can significantly affect performance on low-end machines, though users with larger RAM, like 32GB, may experience minimal impact.

"Each instance using 20–25 MB of RAM. That’s about 2 GB in total, which could be a performance nightmare on low-end hardware. But I’ve 32GB of RAM, so the impact is very minimal."
Source and Observation

The bug was highlighted by Windows Latest, drawing attention to this peculiar Task Manager behavior in the latest Windows 11 build.

Author’s summary: A new Windows 11 bug causes Task Manager to replicate endlessly when closed, potentially consuming large amounts of memory and slowing down lower-end PCs.

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XDA XDA — 2025-11-02

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