Full Breakdown
Windows 11 Task Manager Bug: Duplicate Instances Cause Performance Issues
10/31/2025, 10:41:15 PM
Overview of the Task Manager Bug
The recent optional update KB5067036 for Windows 11 has introduced a significant bug affecting the Task Manager. Users have reported that attempting to close the Task Manager using the "X" button does not terminate the application; instead, it continues to run in the background, leading to multiple instances being created. Each new instance consumes system resources, potentially degrading overall computer performance.
Key Features of the Update
Released on October 28, 2023, the KB5067036 update aimed to enhance the Windows 11 experience with features such as a redesigned Start menu and improved battery icons. However, the update has inadvertently caused the Task Manager to malfunction, allowing it to duplicate itself each time it is reopened. Reports indicate that each instance of Task Manager consumes approximately 20 to 25 MB of RAM, which can accumulate significantly if the application is frequently opened and closed.
Workarounds and Temporary Solutions
To mitigate the impact of this bug, users can employ several workarounds. One effective method is to close all instances of Task Manager from within the Task Manager itself or by using the command prompt with the command `taskkill /im taskmgr.exe /f`, which terminates all running instances simultaneously. This approach is particularly useful for users who need to troubleshoot applications or monitor system performance.
Official Responses and Future Fixes
As of now, Microsoft has not officially acknowledged the Task Manager bug, despite reports from various tech outlets and users on platforms like Reddit. A spokesperson indicated that the company is aware of the issue and is working on a resolution, which is expected to be included in the upcoming November Patch Tuesday update scheduled for November 11, 2023. Until then, users are advised to exercise caution when using the Task Manager following the installation of this update.
Criticism and User Concerns
Critics have expressed frustration over the oversight in the update, particularly given the importance of Task Manager for system monitoring and troubleshooting. Users have noted that while the update is optional, it still poses risks, especially for those who rely on Task Manager for regular system checks. The potential for performance degradation due to multiple instances running simultaneously has raised concerns about the overall reliability of Windows 11 updates.
Conclusion
The KB5067036 update for Windows 11 has introduced a notable bug in the Task Manager, leading to multiple instances running in the background and consuming system resources. While workarounds exist, users are encouraged to remain vigilant and await a formal fix from Microsoft in the upcoming November update. As the situation develops, further updates from Microsoft are anticipated to address this issue and restore the functionality of Task Manager.
