File Extension Library


.XSO File Extension

  • Developer by: Ultrapico
  • Category: Various data Files

What are .XSO files and how to open them?

Can't open .XSO file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .XSO file.

What is a .XSO file extension?

.XSO file extension is created by Ultrapico. .XSO has been classified as Various data Files.

.XSO is Expresso project

The xso file extension is associated with the Expresso, a regular expression development tool for Microsoft Windows operating system, developed by Ultrapico.

The xso file contains project created and saved in the program.


How to open:

Use Expresso to work with *.xso files.

How to convert:

As far as we know, this .xso file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to fix problems with .XSO files

  1. You need to update the application that you normally use to open .XSO files. Only the latest version of the software supports the current .XSO file format
  2. You need to check the .XSO file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)