USI Files: What It Is and How to Open It

If you've received USI files and can't open them for some reason, and you want to know what it is and what to do about it, keep on reading!

USI files are typically a type of binary file used by certain software, and many software packages can share a common file extension. In the case of files with an USI extension, popular software packages such as Unknown Apple II File and UsiXML UI Description File can open it.


Laptop
Download Universal File Viewer (File Magic) 

Optional Offer for File Magic by Solvusoft | EULA | Privacy Policy | Terms | Uninstall


How to Open Your USI File

The easiest way to open file extension USI is to try downloading some of the most popular software that uses USI extension. The most well-known programs associated with USI files include Unknown Apple II File and UsiXML UI Description File.

Computer Files

As you may already know, if you have Unknown Apple II File or UsiXML UI Description File, you can simply double-click on your USI and it should open up. But what if your software does not open the file?

First, try right-clicking on the file and selecting "Open With..." and select Unknown Apple II File or UsiXML UI Description File from the dropdown list. If that didn't work, go into the file associations settings of Windows, and set Unknown Apple II File or UsiXML UI Description File to open USI files by default.

Please note that USI file extensions may not be limited to Unknown Apple II File or UsiXML UI Description File only. You could always do a Google search to find other software that uses USI files and download that to try to open your file.

Still no luck? Get in touch with the developer of the software title to see if they can be of assistance. If your software does not have an identified developer in the chart below, a quick web search of the software title should give you some clues on who to contact.

Lightbulb

Ask yourself: Do I always want to go through this process when I receive an unusual file? Do I want to have to download new software every time I don't have the software associated with the file? If not, download a universal file viewer (File Magic) now to open hundreds of different file types with one program.

There's a better solution. File Magic is a Universal Software Viewer that allows you to open almost all file types without having to buy special software. Instead of spending all this time trying to figure out how to open it, you can now access any* file with confidence and in a few clicks. Download File Magic now!

Software Developer
Unknown Apple II File found on Golden Orchard Apple II CD Rom
UsiXML UI Description File Universite Catholique de Louvain-la-Neuve


Recommended Download

Download


Download Universal File Viewer (File Magic) 

Optional Offer for File Magic by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Microsoft Partner Application Development

Opens all your files
LIKE MAGIC!1

File Magic Boxshot

Download Now

Optional Offer for File Magic by Solvusoft
EULA | Privacy Policy | Terms | Uninstall

1File types that are unsupported can be opened in binary format.

Browse Files