WAB File Extension

Windows Address Book

File Type wab
Developer Microsoft
Popularity
4.8 (37 votes)
Application Microsoft Windows
Category Settings Files

What is a WAB file?

The WAB extension is related to Windows Address Book and is classified in the Settings Files category, which contains 1190 files.

Microsoft, the developer of the Windows Address Book (WAB), has released file format and 242 programs designed to handle them.

WAB file support extends to various operating systems, including Windows. There are 5 programs available to open a WAB file, including popular tools like Microsoft Windows, Windows Mail and Microsoft Outlook.

Programs that support WAB files

Windows ⁵

Windows

How to open a WAB file?

If you are having trouble opening a WAB file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

Thanks to their popularity, Microsoft Windows, Windows Mail and Microsoft Outlook are often the go-to programs for managing WAB files. If you want the most recent release of Microsoft Windows, head over to the Microsoft site and download the version designed to run on all platforms.

After completing the installation, WAB files should be recognized by the system and linked to Microsoft Windows.

Set Microsoft Windows as your default WAB viewer

Set default app to open files on Mac

Right-click or Control + left-click on the desired WAB file to open a menu of available actions;
Choose "Open in Application" and click "Other";
In the lower section of the window, you’ll find the "Enable" menu, with "Recommended Programs" pre-selected as the default option;
Select "All Programs" in this menu, and then search for Microsoft Windows. Check the box next to "Always open in app" to make sure it’s the default option.

Change a default app in Windows

To get started, right-click your WAB file, then choose "Open With" and select "Choose Another Application" from the context menu;
From the list of applications in the pop-up window, find and select Microsoft Windows as your desired application;
Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening WAB files.

Solving Common WAB File Challenges

While WAB files can sometimes present difficulties, most problems can be resolved quickly with minor software modifications. Check the tips below to help solve them.

What Causes Microsoft Windows to Crash Frequently?

Insufficient software updates are a likely cause of Microsoft Windows crashes. Be sure to install the latest updates for Microsoft products.

A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.

How can I restore a damaged WAB file?

Start a data recovery program and open the damaged WAB file. Then, choose the "Repair" option from the menu. Allow the recovery process to complete, which will automatically repair the damaged settings files.

How can I determine if my WAB file is damaged?

Characteristics of corrupted WAB settings files can include:

Microsoft Windows or other programs stop responding or crash when trying to handle the file;
Error notifications appear during file manipulation;
When opening the file, errors occur or the inability to access its contents;
Unexplained WAB file size inflation;
Editing the archive in Microsoft Outlook is hampered by poor overall performance;

How to edit a WAB file?

To modify WAB files, you need to install special software that makes it possible to open and edit settings files. Online WAB editors are more restricted compared to software designed for Windows Address Book.

Best WAB Editor Software in 2026

Taking the above factors into account, we have selected a list of WAB editors currently available.

WAB Editor Software	Developer	Platforms	Overall Rating
Microsoft Outlook	Microsoft	Windows, Mac OS	4.8 out of 5 (43 reviews)
Microsoft Windows	Microsoft	Windows	4.8 out of 5 (38 reviews)
Windows Mail	Microsoft	Windows	4.8 out of 5 (40 reviews)
Microsoft Outlook Express	Microsoft	Windows	4.4 out of 5 (39 reviews)
Windows Live Mail	Microsoft	Windows	4.3 out of 5 (41 review)

Convert files to and from WAB

If working with a WAB file is challenging, one solution is to convert it to formats like ICS or other supported formats.

After converting a WAB file, some capabilities may be limited, but you can often convert it back to the original format.