After replacing the default Windows task manager with Sysinternals’ process explorer via the Options → Replace task manager menu, how do you undo that action, i.e. restore the original task manager? I’ve already tried clicking that menu again, but it doesn’t do anything.


Delete the HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe registry key.

In cmd, you can accomplish this by running (as admin): reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe".

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    the answer is almost perfect, just add that you need to run cmd as admin – kaosmos Jan 29 '19 at 20:11
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    According to the help documentation it's meant to change to "Restore Task Manager" but there must be a bug which doesn't correctly detect which state its in. – Jake Edwards Jul 3 at 1:23

Don't delete the whole key, just delete the Debugger string value.

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