File Extension SLN

  • Full name
    Microsoft Visual Studio Solution Format
  • Developer
  • Popularity
Have you encountered a problem with a SLN file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a SLN file here. In the further part of this page we have added a list of programs that should open your SLN file. It is enough you choose a proper application for your operating system, download and install it.


The file extension SLN is used by Microsoft's Visual Studio products. (eg Visual Studio 2010 Express) A SLN file is a Visual Studio Solution file and contains information about one or more projects.

Microsoft Visual Studio is a so-called IDE (Integrated Development Environment), ie integrated development environment and for various programming languages (C-Sharp, C ++, Visual Basic) available.

The SLN file is used to organize projects and project components. Since such a file contains only references and some settings data, you always need the project folder and the project file. This varies depending on the programming language used and can, for example, call .Csproj (for a C # project)

SLN files are indirectly downwards compatible. Visual Studio automatically detects and converts SLN files saved with older Visual Studio versions, making the whole project usable.

Unfortunately, the SLN file does not recognize the programming language used by the project. The only remedy here is the extension of the project file or a look into the project folder. Depending on the programming language used, you will find vb, c, cpp, or cs files there. To open a SLN file, Visual Studio must also be installed for the appropriate programming language.

Programs which can open a SLN file

How to open a SLN file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the SLN file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a SLN file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support SLN files. At this point we are looking for disk space where the application was installed in and we can link it with a SLN file. Since then, our operating system will use the selected program to support all SLN files.

Other issues

Despite the described problem with SLN there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the SLN file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the SLN file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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