The File Extensions Database


.APPCONTENT-MS File Extension

  • Developer by: Microsoft
  • Category: Data Files

What is an .APPCONTENT-MS file?

.APPCONTENT-MS is Application Content File

An APPCONTENT-MS file contains information about the content in a Windows app that allows enhanced in-app search capabilities. It stores the application content in XML format, which includes keywords and properties that are referenced when the app uses the Windows.Storage.Search API to perform the search.

You will most likely never encounter an APPCONTENT-MS file since it is stored deep in %Appdata%\Local directory. The files are not meant to be manually opened, instead, they are referenced by the app. However, you can manually open the file using a plain text or XML editor to view its contents since the file stores information in XML format.

APPCONTENT-MS files may be used in a variety of applications, such as Facebook and Skype. The file may store various content depending on the app, such as users' full names, birthdates, phone numbers, home addresses, or the last time they signed in.

How to solve problems with APPCONTENT-MS files

  • Associate the APPCONTENT-MS file extension with the correct application. On :
    Windows: Right click on any APPCONTENT-MS file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.APPCONTENT-MS files". Mac: Right click (or Ctrl-click) the APPCONTENT-MS file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .APPCONTENT-MS is Application Content File. Because only the current version supports the latest APPCONTENT-MS file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .APPCONTENT-MS is Application Content File update.
  • To make sure that your APPCONTENT-MS file is not corrupted or virus-infected, get the file again and scan it with antivirus software.