FSPROJ File Extension
Visual F# Project Format
- File Type fsproj
- Developer Microsoft
- Popularity
- Application Microsoft Visual Studio Express
- Category Developer Files
- Format XML
What is a FSPROJ file?
The FSPROJ file extension is linked to Visual F# Project Format and belongs to the Developer Files category, which includes 1166 files.
The Visual F# Project Format (FSPROJ) was developed by Microsoft, which created file format and 242 programs to work with them.
FSPROJ files are compatible with various operating systems, including Mac OS, Windows and Linux. To open a FSPROJ file, you can choose from 9 programs such as Microsoft Visual Studio, Microsoft Visual Studio Express and Sublime Text.
Programs that support FSPROJ files
How to open a FSPROJ file?
If you cannot open a FSPROJ file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Microsoft Visual Studio, Microsoft Visual Studio Express and Sublime Text are recognized as the most popular software solutions for dealing with FSPROJ files. To set up the newest version of Microsoft Visual Studio Express on your device, simply go to the official Microsoft website. There you can download the edition compatible with every operating system.
Once installed, Microsoft Visual Studio Express will be set as the default program, and FSPROJ files will open automatically.
Set Microsoft Visual Studio Express to open FSPROJ by default
Setting a default program by file type in Windows
- Right click on your FSPROJ file, then select "Open with" and click "Choose another application";
- Find the Microsoft Visual Studio Express application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening FSPROJ files.
Change default apps on Mac
- Right-click or use Control + Left-click on the desired FSPROJ file to access the file’s context menu;
- Select "Open in application" and click "Other";
- At the bottom of the window, find the "Enable" menu, where "Recommended Programs" is already selected by default;
- Within this menu, select "All Programs" and then locate Microsoft Visual Studio Express. Check the box next to "Always open in app" to set it as the default program.
How to edit a FSPROJ file?
Editing FSPROJ files requires installing professional software that lets you open and edit developer files. Online editors have more limitations compared to dedicated Visual F# Project Format programs.
Best FSPROJ editors in 2026
Considering the mentioned criteria, we have compiled a list of FSPROJ editors that may suit your needs.
| FSPROJ Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| TextEdit | Apple | Mac OS | 4.8 out of 5 (40 reviews) |
| GNU Emacs | FSF | Linux | 4.7 out of 5 (33 reviews) |
| Gedit | GNOME | Linux | 4.6 out of 5 (38 reviews) |
| Microsoft Expression Blend | Microsoft | Windows | 4.6 out of 5 (36 reviews) |
| Notepad++ | Notepad++ Team | Windows | 4.6 out of 5 (37 reviews) |
| Sublime Text | Sublime HQ Pty | Windows, Mac OS, Linux | 4.6 out of 5 (39 reviews) |
| Microsoft Visual Studio Express | Microsoft | Windows | 4.5 out of 5 (43 reviews) |
| Microsoft Visual Studio | Microsoft | Windows, Mac OS, Linux | 4.2 out of 5 (35 reviews) |
| Windows Notepad | Microsoft | Windows | 4.2 out of 5 (37 reviews) |
Easy FSPROJ Troubleshooting
Certain problems with FSPROJ files can be conveniently fixed with small software tweaks. Here are some helpful tips to address them.
What are the steps to repair a damaged FSPROJ file?
Open the corrupted FSPROJ file in a recovery program and select the "Repair" menu item. Please be patient while the recovery process completes, which will automatically restore the damaged developer files.
How do I know if my FSPROJ file is corrupted?
Corrupted FSPROJ developer files may show the following signs:
- Attempts to open the file result in errors or failed results;
- Editing the archive in Microsoft Visual Studio Express is accompanied by slow performance or delays;
- The file causes Microsoft Visual Studio Express or other programs to hang or crash during operation;
- Unexplained increase in FSPROJ file size;
- Error messages appear while working with the file;
What are the reasons behind Microsoft Visual Studio Express crash?
The likely cause of Microsoft Visual Studio Express crashing is lack of software updates. Install the latest updates available for Microsoft products.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.