Here's a quick fix on how to repair this functionality. Go to Start Button: Run Command Prompt Type: regedit Navigate to: Hive: HKEY_CURRENT_USER Key: Software\Microsoft\Windows\CurrentVersion\Policies\System Name: DisableTaskMgr Type: REG_DWORD Value: 1=Enablethis key, that is DISABLE TaskManager Value: 0=Disable this key, that is Don't Disable, Enable TaskManager
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