title: Migrating from Visual Studio 2008 to 2013 with big solutions
body: <p>I try to migrate Visual Studio 2008 projects to Visual Studio 2013 from a big solution (consists of 100+ projects). When I open the projects with VS 2013, it opens its "One way upgrade" tool and I click upgrade. But for some projects the program goes unresponsive. It only creates a default .vcxproj file but not the fully converted project.It is a dummy project file and when it is opened nothing appears in project explorer.
  The solution conversion stops especially in these projects and freeze occurs. When I try to convert this projects individually, it sometimes converts to 2013 project, in some projects it does not. When I uncheck projects that causes problem, conversion proceeds some more but freeze again in another project.
  I checked Microsoft's pages and other conversion problems here, nothing is wrong about framework versions of my project, I also did not encountered with file copy replace when converting project.
  For sample :
  This is the header of my project that does not convert and causes VS 2013 to freeze in converting process :</p>
  
  <pre><code>&lt;VisualStudioProject
      ProjectType="Visual C++"
      Version="9,00"
      Name="GlobalDeployment"
      ProjectGUID="{AC9CBDA0-2504-4D84-9361-E2F112F56A29}"
      RootNamespace="GlobalDeployment"
      Keyword="MakeFileProj"
      TargetFrameworkVersion="196613"
      &gt;
  And this is the one which has no problem in converting :
  
  &lt;VisualStudioProject
      ProjectType="Visual C++"
      Version="9,00"
      Name="CommonUtilities"
      ProjectGUID="{1FB295FC-DE93-42D1-8AC8-6D51DF017C74}"
      RootNamespace="CommonUtility"
      Keyword="Qt4VSv1.0"
      TargetFrameworkVersion="196613"
      &gt;
  </code></pre>
  
  <p>I also checked qt vs addin, but I converted qt projects before with no problem.
  I checked paths declared in project file. They are correct.
  So what can be the source of this freezing problem?
  Thanks</p>