title: Qt 5.5 not working with MSVS 2015 or 2010
body: <p>I upgraded Qt 5.5 to Qt 5.5 (uninstalled the former first). I was using it with VS2010.</p>
  
  <p>After qt 5.5 installation, it does't pick up the correct compiler. It seems to think I have VS2013 installed which I don't have. <a href="https://i.stack.imgur.com/R9tis.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/R9tis.png" alt="This"></a> is what I see in options: The list of compiler is <a href="https://i.stack.imgur.com/RwWI2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RwWI2.png" alt="here"></a>.</p>
  
  <p>I than even installed VS2015 for the heck of it but it doesn't wwith that either and I get error messsge:</p>
  
  <blockquote>
    <p>C1902: Program database manager mismatch; please check your
    installation</p>
  </blockquote>
  
  <p>I did created a dummy project in VS2015 and it compiles and run fine but Qt doesn't seem to work with it.</p>
  
  <p>Anyways at least I want to make it work with VS2010 that I already have on my machine but even if I configure a kit with it, it doesn't like it and it shows error:</p>
  
  <blockquote>
    <p>error: Qt Creator needs a compiler set up to build. Configure a
    compiler in the kit options.</p>
  </blockquote>
  
  <p>But I do set the compiler as in this <a href="https://i.stack.imgur.com/HRuQI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HRuQI.png" alt="snapshot"></a>.</p>
  
  <p>I am running this on Windows 7 machine.</p>
  
  <p><strong>Update</strong></p>
  
  <p>It seems like Qt 5.5 works best with VS2013? I tried to install that but it wouldn't get installed and show <a href="https://i.stack.imgur.com/ntqg4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ntqg4.png" alt="this"></a> message which is weird! It requires new version of windows than Win7..really?</p>
  
  <p><strong>Resolution:</strong></p>
  
  <p>After receiving and figuring it out, my recommendation is not to use ISO (download the full installation first) installer because one big problem with it is that after it was installed, i couldn't add/remove components to it. When I went into control panel > Install and Qt 5.5 to add VS2010 component, it wouldn't let me and I have to reinstall using web download. That one does allow to add additional components and see what are already installed, much better. See the image bellow of the error when not able to add components.<a href="https://i.stack.imgur.com/cRCvN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cRCvN.png" alt="enter image description here"></a></p>