When you try to open Task Manager, the following error may occur:

“Task Manager has been disabled by your administrator”

-It’s highly likely that your system have been infected with a virus that enable the DisableTaskMgr policy via the registry.

-Throughly scan your computer with an updated antivirus and antispyware.

-Follow any of these steps if the above method did not resolve anything.

1- through registry editor:

  • Click Start, Run and type Regedit.exe
  • Navigate to the following branch:

HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies\ System

  • In the right-pane, delete the value named DisableTaskMgr
  • Close Regedit.exe

2- through the group policy editor:

  • Click Start, Run, type gpedit.msc and click OK.
  • Navigate to this branch:

User Configuration / Administrative Templates / System / Ctrl+Alt+Delete Options / Remove Task Manager

  • Double-click the Remove Task Manager option.
  • Set the policy to Not Configured.

3- through registry editor in notepad:

Copy the  following in notepad,

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
“DisableTaskMgr”=dword:00000000

save it and rename it as taskmanager.reg

eg: taskmanager.txt –> taskmanager.reg

save and double click it

Choose Yes and restart your pc