File Type Generic IconWindows Address Book
File Format Proprietary (Microsoft)
Usage Runs when opened
Rank ★ ★ ★  Common

The Windows Address Book is a data file created, referenced, and updated by Outlook Express. It contains a list of contacts with names and e-mail addresses.

Outlook Express is a free email program developed by Microsoft. It is similar to Outlook, but doesn't have as many advanced features. Outlook can also import data from WAB files.

Open With

IconMicrosoft Windows Contacts

IconMicrosoft Outlook Express

IconMicrosoft Outlook

Updated June 8, 2009