The File Extensions Database

.ABCDDB File Extension

  • Developer by: Apple
  • Category: Database Files

What is an .ABCDDB file?

.ABCDDB is Apple Address Book Contact List

File created by Address Book, a contact organization application; contains a contact list, in SQLite database format, of all the contacts stored within the Address Book application; regenerated when the Address Book application is opened; not meant to be manually opened.

The ABCDDB file can be found in the following directory:

UserHome(Home Icon) > Library > Application Support > AddressBook

NOTE: OS X Mountain Lion replaced the Address Book application with the Contacts application.

Common ABCDDB Filenames

AddressBook-v22.abcddb - If your Address Book contacts aren't displaying correctly, quit the application, move this file from the "AddressBook" folder to your desktop, and start up the Address Book application again.

Programs that open Apple Address Book Contact List
Apple Contacts

How to solve problems with ABCDDB files

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