Visual studio 2012 after installing visual studio 2013

I recently downloaded Visual Studio 2013 final and I already had a Visual Studio 2012 professional working great.

However, after installing VS2013, all my VS2012 projects will not load. I don't even allow adding new projects to projects.

So, I captured the activity log by running the devenv.exe file with the command devenv.exe /log

. An error occurred while opening projects.

The ERROR extension will not be loaded because the extension with the same ID 'Microsoft.Windows.DevelopmentKit.Desktop' is already loaded to C: \ PROGRAM FILES (X86) \ COMMON FILES \ MICROSOFT \ EXTENSIONMANAGER \ EXTENSIONS \ MICROSOFT \ WINDOWS KITS \ 8.0 \ DESKTOP SDK ... C: \ SOFTWARE FILES (X86) \ GENERAL FILES \ MICROSOFT \ EXTENSIONMANAGER \ EXTENSIONS \ MICROSOFT \ WINDOWS KITS \ 8.1 \ DESKTOP SDK \ Extension Manager

Can anyone help me solve the problem?

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I had the same problem. The problem stems from the fact that VS2013 automatically installs two tools that conflict with an older version previously installed with VS2012. (sigh). These two tools:

  • Microsoft.Windows.DevelopmentKit.Desktop
  • Microsoft.WinJS

VS2012 installs version 8.0 and VS2013 installs version 8.1



Decision

  • Control Panel - Programs and Features
  • Select Microsoft Visual Studio 2013
  • Select Change
  • Select "Change"
  • Deselect Windows 8 Application Save Tools and Windows Phone 8.0 SDK
  • Save and restart VS2012 or VS2013

If the error persists, deselect Windows application / program development and try again.

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