XFO File Extension

XFO file icon

XSL-FO Formatted Form

What is a XFO file?

The XFO extension is related to XSL-FO Formatted Form and is classified in the Data Files category, which contains 6196 files.

XFO file support extends to various operating systems, including Windows. There are 3 programs available to create a XFO file, including popular tools like 602XML Filler, Digiform Document Designer and Adobe Acrobat Pro DC.

How to open a XFO file?

If you are having trouble opening a XFO file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

Thanks to their popularity, 602XML Filler, Digiform Document Designer and Adobe Acrobat Pro DC are often the go-to programs for managing XFO files. If you want the most recent release of 602XML Filler, head over to the Software602 site and download the version designed to run on all platforms.

After completing the installation, XFO files should be recognized by the system and linked to 602XML Filler.

Set 602XML Filler as your default XFO viewer

Set default app to open files on Mac

  1. Right-click or Control + left-click on the desired XFO file to open a menu of available actions;
  2. Choose "Open in Application" and click "Other";
  3. In the lower section of the window, you’ll find the "Enable" menu, with "Recommended Programs" pre-selected as the default option;
  4. Select "All Programs" in this menu, and then search for 602XML Filler. Check the box next to "Always open in app" to make sure it’s the default option.

Change a default app in Windows

  1. To get started, right-click your XFO file, then choose "Open With" and select "Choose Another Application" from the context menu;
  2. From the list of applications in the pop-up window, find and select 602XML Filler as your desired application;
  3. Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening XFO files.

Solving Common XFO File Challenges

While XFO files can sometimes present difficulties, most problems can be resolved quickly with minor software modifications. Check the tips below to help solve them.

What Causes 602XML Filler to Crash Frequently?

Insufficient software updates are a likely cause of 602XML Filler crashes. Be sure to install the latest updates for Software602 products.

A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.

How can I restore a damaged XFO file?

Start a data recovery program and open the damaged XFO file. Then, choose the "Repair" option from the menu. Allow the recovery process to complete, which will automatically repair the damaged data files.

How can I determine if my XFO file is damaged?

Characteristics of corrupted XFO data files can include:

  • 602XML Filler or other programs stop responding or crash when trying to handle the file;
  • Error notifications appear during file manipulation;
  • When opening the file, errors occur or the inability to access its contents;
  • Unexplained XFO file size inflation;
  • Editing the archive in 602XML Filler is hampered by poor overall performance;

How to edit a XFO file?

To modify XFO files, you need to install special software that makes it possible to open and edit data files. Online XFO editors are more restricted compared to software designed for XSL-FO Formatted Form.

Best XFO Editor Software in 2026

Taking the above factors into account, we have selected a list of XFO editors currently available.

XFO Editor SoftwareDeveloperPlatformsOverall Rating
602XML FillerSoftware602Windows4.6 out of 5 (41 review)