>> APMASTER file

APMASTER file format description

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

1 filename extension(s) found in our database.

.apmaster - Apple Photos Master Data

The APMASTER data files are related to Apple Photos. APMASTER file is an Apple Photos Master Data. Apple Photos is a free and easy-to-use app for accessing, organizing and sharing your photos and videos.

Apple Photos
Data files
- / -
Apple Photos Master Data related extensions:
Apple Photos Database
Hamachi Client Data
Terragen Cloud Layer Data
SonicSelector Data
iTunes iOS Software Update Data

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

Can't open a .apmaster 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

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