Enable Task Manager disabled by Administrator or Virus in Windows

 Registry Editor is an inbuilt Windows tool that is used to modify registry keys which tell Windows how it should work. A simple registry modification can be used to bypass the Task Manager block. To do so, just follow the 


  steps:-

1. Click on Start. Go to Run. If you use Windows 7 or Windows Vista, go to Search.
2. Type regedit and press Enter. Registry Editor will start. If Registry Editor is also disabled, you will first need to enable registry editing.
3. Through the left hand navigation pane, navigate to HKEY_CURRENT_USER\Software\Microsoft\ Windows\ Current Version\Policies\System.
4. In the work area, double click on "Disable TaskMgr". A window will pop up.
5. Enter its value data as 0 and press OK.
6. Close Registry Editor. If Task Manager is still disabled, restart your computer.

                                                               OR 

Create a Registry(.reg) file for enabling Task Manager

If you are unfamiliar with manually editing the Registry, you can create a Registry file which will automatically modify the Registry Key to re-enable Task Managing. To create one such file:-

1. Open Notepad or any other text editor.
2. Copy the code given below and paste it as it is in it.

Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Windows\ CurrentVersion\Policies\System] �DisableTaskMgr�  =dword:00000000

3. Save the file as Enable Task Manager.reg or *.reg.
4. Open the file by double clicking on it.
5. Registry Editor will ask you for confirmation. In the confirmation Window, click Yes.
6. Task Manager would immediately be accessible. If it is not, restart your computer.