Enable or Disable Task Manager in Windows XP - "Task Manager has been disabled by your administrator"

Sometimes Windows XP users receives Error Message: "Task Manager has been disabled by your administrator". The Screenshot for the error message is shown below

The solution for the above problem is as below

• Click Start->Run
• Type Regedit
• Edit the registry key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
• Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
  Data Type: DWORD Value //
  Value Name: DisableTaskMgr
  Setting for Value Data: [0 = Enabled (Default) / 1 = Disabled]
• Exit Registry and Reboot