>> APPCACHE file

APPCACHE file format description

Many people share .appcache files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .appcache file can be edited, converted or printed with. On this page, we try to provide assistance for handling .appcache files.

1 filename extension(s) found in our database.

.appcache - HTML5 Application Cache

The APPCACHE data files are related to Mozilla Firefox. The APPCACHE file is a HTML5 Application Cache. HTML5 introduces application cache, which means that a web application is cached, and accessible without an internet connection.

Mozilla Firefox
Data files
- / -
HTML5 Application Cache related extensions:
Catia V4 Sequential Data
CommScope Teletilt Control System Tabbed Site Report File
ParFlow Scattered Binary Data
4D Path Document
PKCS #7 Certificate Data in Base 64 Format
IHO S-57 Vector Interchange Data

Naturally, other applications may also use the .appcache file extension. Even harmful programs can create .appcache files. Be especially cautious with .appcache files coming from an unknown source!

Can't open a .appcache 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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .appcache file format, then write to us!