A daily updated filename extension database!

XSX file extension

The table below provides useful information about the .xsx file extension. It answers questions such as:

  • What is the .xsx file?
  • What program do I need to open a .xsx file?
  • How can the .xsx file be opened, edited or printed?
  • How can I convert .xsx files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Microsoft XML Schema Designer View

XSX file is a Microsoft XML Schema Designer View. The XML Schema Designer is a graphical editor for generating, viewing and editing XML Schema documents. The layout of elements in Schema view is stored in the XSX file.
Category: Document files
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
XSX aliases:
XSX related links:
XSX related extensions:
Extensible Markup Language File

Microsoft InfoPath XML Schema

Microsoft InfoPath Property Promotion

Microsoft InfoPath XML Form

Other types of files may also use the .xsx file extension.

🚫 The .xsx file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

asx, csx, dsx, ssx, sx, sxx, xex, xqx, xs, xsa, xsc, xsd, xss, xsz, xx

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Advanced Stream Redirector
Microsoft InfoPath XML Schema
Hummingbird Exceed Startup File
Freescale S-record File
Singer XL Embroidery Data
Alpha Five Database Index
MAPublisher Custom Coordinate System Data
XelaSoft Archive
Adobe Flash Player Shared Object Settings File

🔴 Can't open a .xsx file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .xsx file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .xsx file extension, write to us!

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