Task Manager has been disabled

The problem is whenever you try to open Task Manager, the following error may occur:

“Task Manager has been disabled by your administrator”
Cause:
This error is caused if the DisableTaskMgr restriction is enabled.

Solution:
To enable Task Manager, try one of these methods:

Method 1

Click Start, Run and type this command exactly as given below [Just copy and paste] :

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Pol icies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f

Just copy the following code into notepad and save the file asEnableTM.reg and double click on it.

Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Policies\System]
“DisableTaskMgr”=dword:00000000

Method 3 (try only if u r good with registry editing)

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

HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion \Policies\System


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

Method 4: Using Group Policy Editor - for Windows XP Professional

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.