ABBU File Extension
Address Book Backup
- File Type abbu
- Developer Apple
- Popularity
- Application Address Book (Contacts)
- Category Compressed Files
What is a ABBU file?
Files with the ABBU extension are specifically tied to Address Book Backup, a Compressed Files type, and there are 820 files in this category.
The Address Book Backup (ABBU) was developed by Apple, which created file format and 72 programs to work with them.
ABBU file support extends to various operating systems, including Mac OS. To open a ABBU file, you can choose from 3 programs such as Address Book (Contacts), macOS X and macOS.
How to open a ABBU file?
If you cannot open a ABBU file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Thanks to their popularity, Address Book (Contacts), macOS X and macOS are often the go-to programs for managing ABBU files. If you need the newest version of Address Book (Contacts), just access the Apple website. From there you can download the installer compatible with all systems.
Once Address Book (Contacts) is installed, the OS should configure it as the default tool for opening ABBU files.
Make Address Book (Contacts) the default ABBU viewer
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired ABBU file to access a dropdown menu of actions;
- Choose "Open in Application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for Address Book (Contacts). Check the box next to "Always open in app" to make it the default option.
Change a default app in Windows
- Start by right-clicking on your ABBU file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
- Inside the popup window, scroll through the list of applications and specifically choose Address Book (Contacts) as the application to associate with your ABBU file;
- Check the "Always use this app" checkbox and click "OK".
Finding answers to ABBU file problems
If ABBU files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What can lead to sudden Address Book (Contacts) crashes?
Insufficient updates for Apple products can cause Address Book (Contacts) to crash. Be sure to regularly install the latest software updates.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What is the recommended approach to repair a damaged ABBU file?
Use a recovery program to open the damaged ABBU file, and in the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish as it will automatically restore the damaged compressed files.
What are the ways to check if my ABBU file is damaged?
Characteristics of corrupted ABBU compressed files can include:
- The file encounters problems during the opening process or shows error indications;
- Editing the archive in Address Book (Contacts) is hampered by poor overall performance;
- The file causes Address Book (Contacts) or other software to hang or crash during various operations;
- An unexplained increase in the size of the ABBU file;
- Actions performed on the file result in the appearance of error notifications;
How to edit a ABBU file?
To modify ABBU files, you need to install special software that makes it possible to open and edit compressed files. Online ABBU editors are more restricted compared to software designed for Address Book Backup.
Best ABBU editors 2026
According to these factors, we have compiled a list of available ABBU editors.
| ABBU Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Address Book (Contacts) | Apple | Mac OS | 4.6 out of 5 (43 reviews) |
Convert files to and from ABBU
After converting a ABBU file, some capabilities may be limited, but you can often convert it back to the original format.