Converting VS2012 Solution to VS2010


I'm working in VB project with VS 2012 and after finish I try to add setup project.

I didn't find it (because the Setup Project was discontinued after VS2010) so I switched to VS2010 but the problem is the project wont open and I get this message:

The selected file is a solution file but was created by a newer version of this application and cannot be opened.

I tried this article : and tried to convert from 2012 to 2010 but same message appears.

This question is tagged with visual-studio-2010 visual-studio-2012

~ Asked on 2012-08-27 13:52:10

The Best Answer is


I also faced the similar problem. I googled but couldn't find the solution. So I tried on my own and here is my solution.

Open you solution file in notepad. Make 2 changes

  1. Replace "Format Version 12.00" with "Format Version 11.00" (without quotes.)
  2. Replace "# Visual Studio 2012" with "# Visual Studio 2010" (without quotes.)

Hope this helps u as well..........

~ Answered on 2012-11-19 16:38:57


Just to elaborate on Bhavin's excellent answer - editing the solution file works but you may still get the incompatible error (as David reported) if you had .NET 4.5 selected as the default .NET version in your VS2012 project and your VS2010 enviroment doesn't support that.

To quickly fix that, open the VS2012 .csproj file in a text editor and change the TargetFrameworkVersion down to 4.0 (from 4.5). VS2010 will then happily load the "edited" solution and projects.

You'll also have to edit an app.config files that have references to .NET 4.5 in a similar way to allow them to run on a .NET 4.0 environment.

~ Answered on 2013-01-28 10:43:36

Most Viewed Questions: