All about MASTER Files

The MASTER file type is primarily associated with Xcode.

MASTER	File extension: MASTER
	File type:	configuration file

What is a MASTER file?

MASTER files mostly belong to Xcode.

A MASTER file can be a system configuration file used by Apple. In this case the file is built with a plist format. It stores core settings for the Notification Center and acts as the primary data configuration file. You can open and view these files with Xcode’s macOS Property List Editor. For detailed information, check out the Xcode documentation.

Alternate Use:
Another application of a MASTER file is in Git repository management. Here the file contains essential repository metadata and serves as the main copy of a data file. It works with Git tools and you can learn more at GitHub.

Stores structured system settings (plist format) for Apple Notification Center.
Holds vital metadata for version control in Git repositories.
Acts as the original or primary copy in a file set.

FilExt.com tip: If you need to modify a MASTER file, use the specific editor for the format—Xcode’s Property List Editor for Apple files and Git clients for repository files. Always back up the original before making changes.

How to open a MASTER file

You need a suitable software like Xcode to open a MASTER file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MASTER file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MASTER file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MASTER Text Viewer

Choose your .master file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert MASTER files:

Xcode
See the previous paragraphs to learn more about the main application. MASTER files are often referred to as Xcode settings because this type of file is primarily created or used by this software.
Xcode, Git
A .MASTER file commonly refers to a master copy of a data file, often used within a Git repository for version control. It can also represent an Apple Notification Center file (plist) used by Xcode for primary data configuration. The plist format is an Apple macOS property list file. This file format is classified as Configuration, Version Control.

Technical Data for MASTER File Extension

File classification:

Settings

Related files:

plist, config, meta, next, commit_editmsg, exclude, description, head, sample, index, check, aspx, elf, zlib, ini, xml, json

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: VWDExpress.master.8.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 8\Common7\IDE\VWDExpress.exe /dde %1

ProgramID: VisualStudio.master.8.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 8\Common7\IDE\devenv.exe /dde %1

ProgramID: VWDExpress.master.9.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\VWDExpress.exe

ProgramID: VisualStudio.master.9.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe

Show all 4 listings To Top

a master configuration file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with MASTER files

Associate the MASTER file extension with the correct application.
Update your software that should actually open configuration files. Because only the current version supports the latest MASTER file format. Search, therefore, e.g. on the manufacturer website after an available Xcode update.
To make sure that your MASTER file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .MASTER file online - secure, fast, and no downloads needed.