Enable Task Manager in C# after disabling it

Question

I'm having an issue with reenabling Task Manager after I disable it in C#. It says the registry doesn't exist. Please help.

jinge · Answer

private void button2_Click(object sender, EventArgs e) { RegistryKey regkey; string subKey = "Software\Microsoft\Windows\CurrentVersion\Policies\System"; try { regkey = Registry.CurrentUser.CreateSubKey(subKey); regkey.DeleteValue("DisableTaskMgr"); regkey.Close(); } catch (Exception ex) { MessageBox.Show(ex.ToString()); } }

Bryan · Answer

Perfect, thank you Jinge.

Kirtan Patel · Answer

Make Sure you Run the Application Under Administrator Rights if you have made registry changes in HKEY_LOCAL_Machine else it will work without administrator rights if you Disabled TaskManager From HKEY_CURRENT_USER :) please check "Do you like this answer" if helps you :) private void btnEnableTaskManager_Click( object sender, EventArgs e) { RegistryKey rkey = Registry .CurrentUser.OpenSubKey( @"Software\Microsoft\Windows\CurrentVersion\Policies\System\" , true ); rkey.DeleteValue( "DisableTaskMgr" , true ); rkey.Close(); try { RegistryKey rkey2 = Registry .LocalMachine.OpenSubKey( @"Software\Microsoft\Windows\CurrentVersion\Policies\System" , true ); rkey.DeleteValue( "DisableTaskMgr" , true ); rkey2.Close(); } catch { } MessageBox .Show( "Regitry Enabled !!" ); }