A daily updated filename extension database!

APPX file extension

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

  • What is the .appx file?
  • What program do I need to open a .appx file?
  • How can the .appx file be opened, edited or printed?
  • How can I convert .appx 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 Windows 8 App Package

APPX file is a Microsoft Windows 8 App Package. An app package is a container based on the Open Packing Conventions (OPC) standard. OPC defines a structured way to store data and resources for the app by using a standard ZIP file.
Application: Microsoft Windows 8
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
APPX aliases:
APPX related links:
APPX related extensions:
Windows 8 App Package Symbols

Microsoft Windows 8.1 App Bundle Package

Microsoft Windows 8.1 App Bundle Manifest File

Windows 8 App Upload Package

Microsoft Windows Encrypted App Package

Microsoft Windows 8.1 Encrypted App Bundle Package

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

🚫 The .appx file extension is often given incorrectly!

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

app, appc, apx, ppx

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

SymbianOS Compiled Application
WebSuite Compiled Active Page
Visual FoxPro Application
Serif PagePlus Template
Alphacam Punch Post Data
Atari 8-bit Apac3 Linker-Viewer Image
Oracle WebLogic APPC Data
Ability Photopaint Image

🔴 Can't open a .appx 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 .appx 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 .appx file extension, write to us!

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