Fix “Task Manager has been Disabled by Your Administrator”

when you try to run Task Manager, Windows shows following error message:

Task Manager has been disabled by your administrator.

There are 2 possible reasons behind this problem:

• Your system administrator applied the restriction using Registry Editor or Group Policy Editor.
• Your system has been infected with Virus and it has disabled the Task Manager.

Type regedit in RUN dialog box or Startmenu Search box and press Enter. It'll open Registry Editor Now go to following keys one by one:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System
HKEY_USERS\.default\Software\Microsoft\Windows\CurrentVersion\Policies\System

 and look for a DWORD value "DisableTaskMgr" in right-side pane. If you find it, delete it. That's it. Now Task Manager will be enabled.