Microsoft has done it again! The latest bug now hides in the least possible place—the one and only Task Manager. According to multiple user reports, the Windows 11 update KB5067036 is causing the Task Manager to remain open even after being closed, creating a new instance each time a user opens and closes it. Each instance uses around 20-95 MB of RAM, so if you open and close it 100 times, you could end up with 2 GB of RAM tied up by these persistent Task Manager instances. Additionally, these background instances can consume CPU resources. Despite being a minimally invasive application, each tskmgr.exe instance uses about 0.9% of CPU resources, so 10 instances could reduce your CPU's capacity by almost 10% without you even noticing.
We managed to replicate the bug, and found multiple instances running in the background, without any way to normally close it. A simple fix for this issue is clicking the "End Task" button instead of the classical "X" to exit application. However, if you opened multiple instances to play with how many times the process can be repeated, you will have a hard and boring time solving it manually. Instead, use the "taskkill /im taskmgr.exe /f" command in the command line as administrator to remove all existing Task Manager processes. As always, be cautious when running any command in the CMD as an administrator—but trust us on this one.
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