What is the FSX File Extension?

Researcher:   |   Updated: December 05, 2018

Microsoft Silver

FSX File Summary

Most FSX files can be viewed with six known software applications, typically Microsoft Notepad developed by Microsoft Corporation. and associated with the Visual F# Script File format as it's primary file type. FSX files are categorized ordinarily as Developer Files.

File Extension FSX files have been identified on both desktop and mobile devices. They are fully or partially supported by Windows, Mac, and Linux. The Popularity Rating for FSX files is "Low", which means these files are not ordinarily found on an everyday user's device.

If you would like to learn more about FSX files and the software that opens them, please see the additional detailed information below. Also, you can learn how to do some basic FSX file troubleshooting if you are having trouble opening these files.

Low
Universality
1610
Position

/ 11690

Active

State

5

December

2018

Updated

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Known FSX Files


Chief FSX Description

.FSX
Formatting:.fsx
Type:Visual F# Script File

Script written in F#, a functional programming language. It used for scripting F# code instead of compiling it. Saved in text format, so it can be viewed in any text editor.

Developer: Microsoft Corporation
Function:Developer Files
Registry Key: HKEY_CLASSES_ROOT\.fsx

Software Programs That Open The Visual F# Script File:


Microsoft Notepad by Microsoft Corporation

Windows
Mac
Linux

Notepad++ by Don Ho

Windows
Mac
Linux

Microsoft Visual Studio by Microsoft Corporation

Windows

GNU Emacs by GNU Project

Windows
Mac
Linux
GNU

Gedit by GNOME

Linux

Apple TextEdit by Apple

Mac

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FSX Demand


Primary OS Ranking

Windows (97.14%)
Macintosh (2.06%)
Linux (0.73%)
Chrome (0.05%)
Other (0.01%)

OS Popularity

7 (45.73%)
10 (44.56%)
8.1 (5.41%)
XP (2.79%)
8 (0.97%)


Understanding FSX Issues


Common Problems Opening FSX Files

Microsoft Notepad is Not Installed

When you double-click your FSX file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". If this is the case, it's usually due to the fact that you do not have Microsoft Notepad for %%os%% installed on your computer. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.


Tip: If you know of another program that can open your FSX file, you can try opening it by selecting the application from the programs listed.


Obsolete Version of Microsoft Notepad

In other instances, your Visual F# Script File file version may not be supported by your version of Microsoft Notepad. You will need to download a newer version of Microsoft Notepad if you don't have the right version. Most of the time your Visual F# Script File file was created by a newer Microsoft Notepad than what you have installed.


Tip: Investigate your FSX file by right-clicking and selecting "Properties" to find clues on what version you need.


Primarily, problems experienced when opening FSX files are due to having the incorrect version of Microsoft Notepad installed on your computer.


Other FSX File Issues

You can still experience errors opening FSX files even with the latest version of Microsoft Notepad installed on your PC. There can be other issues - unrelated to software - preventing you from opening FSX files. Other contributing causes:

  • Invalid FSX file references in the Windows Registry (the "phonebook" of the Windows Operating System)
  • Corruption of the FSX file description inside the Registry
  • Incomplete or bad installation of a software application associated with the FSX format
  • File corruption affecting your FSX file
  • Your FSX has adversely impacted by malware
  • Hardware related to FSXs has device driver corruption
  • Windows has inadequate resources to open your Visual F# Script File file

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