title: Upgrade to Visual Studio 2015 and now can't hit break points in debugging
body: <p>I have a multi-project solution that I was building in Visual Studio 2013 and it was working fine but now that I have upgraded to Visual Studio 2015 I can no longer hit break points in debug mode for any project exect the main project selected as the Startup project in the Project Properties page. I used to be able to click on the other projects and just choose Debug -> Start New Instance. I am getting the error <code>The breakpoint will not currently be hit. No symbols have been loaded for this document.</code> I have tried a lot of things found on Google including:</p>
  
  <ul>
  <li>Clean/Rebuild</li>
  <li>Delete the OBJ and BIN folder form the projects</li>
  <li>Did VS repair</li>
  <li>Rebooted</li>
  <li>Uninstalled/Reinstalled</li>
  <li>Confirmed Define DEBUG constraint is enabled for Properties -> Build</li>
  <li>Confirmed Optimize Code is unchecked for Properties -> Build</li>
  <li>Confirmed Properties -> Build => Platform target was set to Any CPU for all projects</li>
  <li>Tried running VS using "Run as Administrator"</li>
  <li>Deleted all the files in /AppData/Local/Temp/Temporary ASP.Net Files/</li>
  <li>Made sure Debug -> Attack to Process -> Select had "Automatically determine the type of code to debug" was selected</li>
  <li>Made sure the Properties -> Web -> Debuggerts had ASP.Net checked (my properties has ASP.NEt and Enable Edit and Continue Checked, Natvie Code SQL Server and Silverlight unchecked)</li>
  <li>Confirmed Target framework in Properties -> Application was set to the same version (4.6) as in the Web.Config/App.Config files.</li>
  </ul>
  
  <p>So what am I missing here? Why can I no longer debug the other projects?</p>