VS2012遇到"the project requires user input"问题

在使用VS2012的时候遇到一个错误“the project requires user input”，sln里面的project都无法正常加载，而在此之前全部正常工作，且代码完全没有修改后，最后用下述方案解决。

• Hi,

  Please try these steps below to reinstall the Visual Studio templates:

  1) Please open Windows Explorer, and navigate to <Visual Studio Installation Path>\Common7\IDE (by default is <C:\Program Files \Microsoft Visual Studio 11.0\Common7\IDE>);
  2) Delete the ItemTemplatesCache, ProjectTemplatesCache folder;
  3) Open Visual Studio Command Prompt x64 Cross Tools Command Prompt under Start menu -> All Programs -> Microsoft Visual Studio 2012 -> Visual Studio Tools (run it with Administrator privilege: right-click the program -> Run as administrator);
  4) Run the devenv /InstallVSTemplates switch;
  5) Run the devenv /Setup switch

  Best regards,

  ---

  Ego [MSFT]
  MSDN Community Support | Feedback to us
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参考链接：https://social.msdn.microsoft.com/Forums/zh-CN/e3a3e887-2030-4e20-9eea-72028119a64f/visual-studio-2012-project-load-failed