The File Extensions Database

.APPCACHE File Extension

  • Category: Web Files
  • Format: Text

What is an .APPCACHE file?

.APPCACHE is HTML5 Cache Manifest File

An APPCACHE file is a file used by web browsers to enable accessibility of web applications when there is no network connection. It contains copies of resources that make up web applications, such as image (.PNG, .GIF, etc.), .CSS, and .JS files, and are identified by URLs.

APPCACHE files are created to allow web applications to run without an Internet connection, reduce the server load, and hasten webpage load time.

The APPCACHE file consists of four optional sections:

  • CACHE - Lists all resources that need to be downloaded and locally stored.
  • NETWORK - Lists all URLs that are loaded via Internet and won't be cached.
  • FALLBACK - Lists replacements for network URLs that are used if the web browser is offline.
  • SETTINGS - Determines settings for application cache behavior.

How to solve problems with APPCACHE files

  • Associate the APPCACHE file extension with the correct application. On :
    Windows: Right click on any APPCACHE file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.APPCACHE files". Mac: Right click (or Ctrl-click) the APPCACHE 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 .APPCACHE is HTML5 Cache Manifest File. Because only the current version supports the latest APPCACHE file format. Search, therefore, e.g. on the N/A manufacturer website after an available .APPCACHE is HTML5 Cache Manifest File update.
  • To make sure that your APPCACHE file is not corrupted or virus-infected, get the file again and scan it with antivirus software.