ABCDDB File Extension

What is ABCDDB file?

ABCDDB filename suffix is mostly used for Apple Address Book Database files. Apple, Inc. defined the Apple Address Book Database format standard. Files with ABCDDB extension may be used by programs distributed for Mac OS platform. Files with ABCDDB extension are categorized as Database Files files. The Database Files subset comprises 403 various file formats. The most popular program for handling ABCDDB files is Mac OS X Address Book (Contacts), but users can choose among 1 different programs that support this file format.

Programs which support ABCDDB file extension

Programs that can handle ABCDDB files are as follows. Files with ABCDDB extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

How to open file with ABCDDB extension?

Problems with accessing ABCDDB may be due to various reasons. Fortunately, most common problems with ABCDDB files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with ABCDDB files.

Step 1. Get the Mac OS X Address Book (Contacts)

The main and most frequent cause precluding users form opening ABCDDB files is that no program that can handle ABCDDB files is installed on user’s system. This one is an easy one. Select Mac OS X Address Book (Contacts) or one of the recommended programs (for example, AB2CSV) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support ABCDDB files, classified according to system platforms for which they are available. The safest method of downloading Mac OS X Address Book (Contacts) installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of Mac OS X Address Book (Contacts)

You still cannot access ABCDDB files although Mac OS X Address Book (Contacts) is installed on your system? Make sure that the software is up to date. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. The reason that Mac OS X Address Book (Contacts) cannot handle files with ABCDDB may be that the software is outdated. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Mac OS X Address Book (Contacts).

Step 3. Assign Mac OS X Address Book (Contacts) to ABCDDB files

If you have the latest version of Mac OS X Address Book (Contacts) installed and the problem persists, select it as the default program to be used to manage ABCDDB on your device. The method is quite simple and varies little across operating systems.

Change the default application in Windows

• Clicking the ABCDDB with right mouse button will bring a menu from which you should select the Open with option
• Select Choose another app → More apps
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Mac OS X Address Book (Contacts) is installed. Now all that is left is to confirm your choice by selecting Always use this app to open ABCDDB files and clicking OK.

Change the default application in Mac OS

• Right-click the ABCDDB file and select Information
• Find the Open with option – click the title if its hidden
• From the list choose the appropriate program and confirm by clicking Change for all....
• A message window should appear informing that This change will be applied to all files with ABCDDB extension. By clicking Continue you confirm your selection.

Step 4. Verify that the ABCDDB is not faulty

Should the problem still occur after following steps 1-3, check if the ABCDDB file is valid. Being unable to access the file can be related to various issues.

1. Verify that the ABCDDB in question is not infected with a computer virus

Should it happed that the ABCDDB is infected with a virus, this may be that cause that prevents you from accessing it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the ABCDDB file is indeed infected follow the instructions below.

2. Verify that the ABCDDB file’s structure is intact

If you obtained the problematic ABCDDB file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with ABCDDB extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Check if the user that you are logged as has administrative privileges.

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Apple Address Book Database file.

4. Check whether your system can handle Mac OS X Address Book (Contacts)

If the system is under havy load, it may not be able to handle the program that you use to open files with ABCDDB extension. In this case close the other applications.

5. Verify that your operating system and drivers are up to date

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Apple Address Book Database files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle ABCDDB files.

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