What is a .FSI File And How To Open It – Microsoft

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Have you downloaded a file with .fsi extension, but you have never seen this extension before? You most likely know what the file is, but you might be unsure on how to open it. Fear not, in this article we will show you how to easily open the .fsi file in few simple steps on various systems.

What is a .FSI file?

The .FSI file extension stands for Visual F# Signature File. The development of this file was done by Microsoft. The file has the text format, and it is a development related file.

What to know

There is currently 0 software that can open the .fsi file on 0 platforms.


Unfortunately, we haven’t found a software associated with this file extension yet, however we are working on it!