There is a registry hack to enable or disable Task Manager.
Hive: HKEY_CURRENT_USER
Key: Software\Microsoft\Windows\CurrentVersion\Policies\System
Name: DisableTaskMgr
Type: REG_DWORD
Value: 1=Enable this key, that is DISABLE TaskManager
Value: 0=Disable this key, that is Don’t Disable, Enable TaskManager.
If you are an Administrator you can consider using Group Policy Editor. For that,
- Click Start
- Click Run
- Enter gpedit.msc in the Open box and click OK
- In the Group Policy settings window
- Select User Configuration
- Select Administrative Templates
- Select System
- Select Ctrl+Alt+Delete options
- Select Remove Task Manager
- Double-click the Remove Task Manager option
Since the policy is Remove Task Manager, by disabling the policy, you are enabling the Task Manager.
FYI: You can run registry editor with command regedit.
