By Sergiu Gatlan
Publication Date: 2025-11-12 10:42:00
Microsoft has resolved a known issue preventing users from quitting the Windows 11 Task Manager after installing the optional Windows 11 KB5067036 update.
The bug was acknowledged last week after widespread user reports that the Task Manager continued to run in the background even after the app was quit, causing performance issues such as stuttering and CPU hangs.
Although having a few Task Manager processes running in the background usually doesn’t cause issues, this issue can easily become serious when many instances run unnoticed, since it “can cause noticeable slowdowns in other applications,” according to Microsoft.
“After installing Windows Updates released on or after October 28, 2025 (KB5067036), you might encounter an issue where closing Task Manager using the Close (X) button does not fully terminate the process,” Microsoft noted when it confirmed the bug.
“When you reopen Task Manager, the previous instance continues running in the background even…
