Latest Windows 11 update, I’ve noticed Task Manager sometimes opens multiple instances

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Latest Windows 11 update, I’ve noticed Task Manager sometimes opens multiple instances

Briston Capital 180

Hey Microsoft team,

After the latest Windows 11 update, I’ve noticed Task Manager sometimes opens multiple instances at once, which slows things down and eats up memory. Are you aware of this bug, and is there a fix or update coming soon?

Thanks for any help!

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Answer 1

Harry Phan 31,295 Independent Advisor

Hi Briston,

The issue is reported by many users after installing the KB5067036 optional update. It's said that, when users close Task Manager using the “X” button, the process doesn’t fully terminate, and when reopened, it creates duplicate entries under the Details tab and consume more memory.

I think Microsoft has acknowledged the bug, how come they can't, it’s been widely reported by users :D.

Have you installed the KB5067036? This update is optional, so if you haven’t installed it, you can avoid the issue by skipping it for now.

If this helped you out, feel free to click "Accept Answer" to help others benefit as well.

Harry.

Briston Capital 180 Reputation points

2025-11-09T05:50:49.92+00:00

Thanks Harry for the details. Slowing down things are quite irritating for someone who is lack of patience like me. Q&A Assist says that this issue is labeled as mitigated in the future updates, do you know when are they gonna release the update?
Harry Phan 31,295 Reputation points Independent Advisor

2025-11-09T05:55:59.6666667+00:00

Hi Briston, I don't think Microsoft has announced a specific release date for the fix. It's unsure for now so I suggest you to keep eyes on the upcoming versions...

And regarding the irritation for the slow performance, I understand what you mean.. I can 100% relate to that. Have you tried out the AI recommendation in the answer box below? Did it work?

Answer 2

Yes, there is a known issue with the Task Manager in Windows 11 after the latest updates. Users have reported that closing Task Manager using the Close (X) button does not fully terminate the process, leading to multiple instances running in the background. This can consume system resources and potentially degrade performance.

As a workaround, you can either:

Use the End Task option on the Task Manager process itself in the Processes tab.
Use the command line to close all instances by running the command taskkill.exe /im taskmgr.exe /f in an elevated Command Prompt.

Microsoft is aware of this issue and has labeled it as mitigated in their updates. Keep an eye out for future updates that may resolve this problem completely.

References: