title: How can I fail CoCreateInstanceEx, CoInitializeSecurity, CoSetProxyBlanket, WMI calls
body: <p>I am executing tests as part of my unit test project. 
  I wanted to know is there any way to fail the following calls :</p>
  
  <p>CoCreateInstance
  CoInitializeSecurity
  CoSetProxyBlanket
  WMI Calls</p>
  
  <p>I want to do this as a administator user without have access to any code like for e.g stopping any service, or removing any dlls</p>
  
  <p>I have to do this so that the negative code coverage increases.</p>
  
  <p>Can anyone please help me :)</p>
  
  <p>Thanks a lot :)</p>