What is an oab file and how do I open an oab file?
OAB files store data such as names, email addresses, and other contact information for Microsoft Outlook.
Files in OAB format can be opened with Microsoft Outlook 2010 in Microsoft Windows platforms. Outlook user details can be obtained regardless of a connection to the server. Instead, Outlook obtains such information from the local OAB. A user can possibly deploy OAB files manually to minimize performance issues. The OAB (Offline Address Book) stores all the properties of an Outlook user, like name, email address, phone number and company alias, etc. It enables you to write email to specific individuals that are sent when Outlook connects to the Internet again. To download OAB, Open Microsoft Outlook. Make sure you are connected to the Internet and to your Exchange Server. Click the "Tools" menu item and then scroll to "Send\Receive" and then select "Download Address Book." Choose "Full Details" under "Information to download."
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How to open oab file on Microsoft.com