“Task Manager has been disabled by your administrator”. I have never see this before when I write this. Why administrator need to disable Task Manager? Anyway… Here are some solutions to this re-enable Task Manager again.

Solution 1:
Type this “REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f” command at Windows ‘Run…‘

Solution 2:
Use Registry Editor (Regedit.exe) to edit the DisableTaskMgr value from 1 to 0 which located at [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ System]

Solution 3:
Type “gpedit.msc” command at Windows ‘Run…‘. Under “User Configuration / Administrative Templates / System / Ctrl+Alt+Delete Options / Remove Task Manager“, change Remove Task Manager to Not Configured or just disable it.

All these solutions should help you solve “Task Manager has been disabled by your administrator” issue. :D