USI File Extension

USI file icon
UsiXML UI Description

What is USI file?

USI is a file extension commonly associated with UsiXML UI Description files. USI files are supported by software applications available for devices running Windows. USI file belongs to the Developer Files category just like 1013 other filename extensions listed in our database. The most popular software that supports USI files is Sublime Text. Software named Sublime Text was created by Sublime HQ Pty Ltd. In order to find more detailed information on the software and USI files, check the developer’s official website.

Programs which support USI file extension

Below is a table that list programs that support USI files. Files with USI suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support USI file

How to open file with USI extension?

There can be multiple causes why you have problems with opening USI files on given system. What is important, all common issues related to files with USI extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the Sublime Text

Problems with opening and working with USI files are most probably having to do with no proper software compatible with USI files being present on your machine. To address this issue, go to the Sublime Text developer website, download the tool, and install it. It is that easy Above you will find a complete listing of programs that support USI files, classified according to system platforms for which they are available. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Sublime Text website and download the installer.

Step 2. Verify the you have the latest version of Sublime Text

You still cannot access USI files although Sublime Text is installed on your system? Make sure that the software is up to date. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why USI files are not compatible with Sublime Text. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Sublime Text.

Step 3. Associate UsiXML UI Description files with Sublime Text

If the issue has not been solved in the previous step, you should associate USI files with latest version of Sublime Text you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Selecting the first-choice application in Windows

  • Clicking the USI with right mouse button will bring a menu from which you should select the Open with option
  • Next, select the Choose another app option and then using More apps open the list of available applications
  • The last step is to select Look for another app on this PC option supply the directory path to the folder where Sublime Text is installed. Now all that is left is to confirm your choice by selecting Always use this app to open USI files and clicking OK.

Selecting the first-choice application in Mac OS

  • From the drop-down menu, accessed by clicking the file with USI extension, select Information
  • Proceed to the Open with section. If its closed, click the title to access available options
  • Select the appropriate software and save your settings by clicking Change all
  • A message window should appear informing that This change will be applied to all files with USI extension. By clicking Continue you confirm your selection.

Step 4. Check the USI for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper USI file. It is probable that the file is corrupted and thus cannot be accessed.

1. The USI may be infected with malware – make sure to scan it with an antivirus tool.

If the USI is indeed infected, it is possible that the malware is blocking it from opening. Scan the USI file as well as your computer for malware or viruses. If the scanner detected that the USI file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Verify that the USI file’s structure is intact

If the USI file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. It could happen the the download process of file with USI extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative rights

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the UsiXML UI Description file again.

4. Check whether your system can handle Sublime Text

If the systems has insufficient resources to open USI files, try closing all currently running applications and try again.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with UsiXML UI Description files. It is possible that one of the available system or driver updates may solve the problems with USI files affecting older versions of given software.

Do you want to help?

If you have additional information about the USI file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on USI file.

Top File Extensions
Show more
File Extension of the day
partial icon


Internet Explorer Partially Downloaded Format

PARTIAL file extension is used for partially downloaded files by Internet Explorer 9 (and later) and Microsoft Edge web browsers. As the name sugge...