.APMASTER File

.apmaster is Apple Photos data

Key Features: .APMASTER File Extension

Features	Description
File Extension	.apmaster
Format	N/A
Created by	Apple
Category	Various data

What's on this Page

How to open:
How to convert:

What is an .APMASTER file?

The apmaster file extension is associated with the Apple Photos and Apple iPhoto software included in OS X that allow users to manage and edit digital photos.

The apmaster file stores some kind of data used by Photos and iPhoto.

How to open:

The apmaster files are used for internal purposes of Apple Photos programs.

How to convert:

Conversion to other formats is not possible.

Apple

Various data

N/A

How to solve problems with APMASTER files

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