CODEWITHSUNDEEP
visual-studio-2010visual-studio
user2341596
user2341596

Reputation: 65

Visual Studio 2010 is unable to open project

I used Visual Studio 2010 to develop a web application. I formatted my machine and installed Visual Studio 2010 Professional. When I try to open old projects, I get an error saying:

The selected file is a solution file, but was created by a newer version of this application and cannot be opened.

I do not remember the version of visual studio 2010 I used the first time. Can anyone tell me which version came after the professional edition?

Upvotes: 1

Views: 4151

Answers (3)

toATwork
toATwork

Reputation: 1357

Open the .sln file in a text editor. In the beginning there is a marker which tells the VS version it is meant for. For VS 2010 it should look like that:

Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010

You should be able to change these values without any problems. As far as I know the file format did not change.

EDIT

Considering the comment of Dumisani: of course you need to target .net 4.0 and make sure no features of .net 4.5 are used!

Upvotes: 3

Sam
Sam

Reputation: 10113

Chances are you had a service pack installed that you are missing with a clean installation.

Upvotes: 1

BenM
BenM

Reputation: 4278

Make sure VS2010 is updated to the latest service pack, otherwise check to see if the project was actually made in VS2012/13 in which case you will need to create a new VS2010 solution and rebuild it from your existing projects.

Upvotes: 3

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