title: Can't install VS 2015 Update 3
body: <p>So I tried to install VS 2015 Update 3. BTW, I have the professional edition and I  keep receiving this screen:</p>
  
  <p><a href="https://i.stack.imgur.com/xC2U9.jpg"><img src="https://i.stack.imgur.com/xC2U9.jpg" alt="Screen shot of installation"></a></p>
  
  <p>Now, of course, Update 2 is already installed but it will not recognize this.</p>
  
  <p>What do I need to do? </p>