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PREVIOUS files: what are they and how do I open them?

previous file icon Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
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Mac OS X Address Book backup file

Files with previous extension are associated with Address Book program. They contain backup data.

Further details:

The previous file extension is related to Address Book application from Mac OS X.

AddressBook.previous files are backups of AddressBook.data files created when last edit of the contacts occurs, to keep the original file for security reasons. 

Open file with:

Address Book (Contacts) for Mac icon

Address Book (Contacts) for Mac

Contact management tool for macOS

What is the meaning of a file extension?

File extensions are characters that appear after the dot in a computer file's name. For example, the file "unknown-file.pdf" has the file extension "pdf". This is used to identify which program should open the file or what file type it is.
File extensions help you organize and manage files. They provide a quick and easy way to identify and associate the file type with the appropriate software.

We can help you open your file

In our database, we have collected a huge number of different file extensions, detailed descriptions, and programs that can be used to open or otherwise work with the file extensions listed in our database.
This database is an invaluable resource for users who want to understand better file extensions and what they can do with them. It also allows users to know different file types with the same purpose.

Only verified software links are provided

We have verified every software listed in our database. The software listed in our database includes links to the developer's or software's website. These links should allow you to download the right program for each file type. Using verified software from reputable sources helps minimize the risk of malware and viruses infecting your computer.