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This article was previously published under Q238892
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For information about the differences between Microsoft Outlook Express and Microsoft Outlook e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/257824/EN-US/ )OL2000: Differences Between Outlook and Outlook Express
When you try to import a Netscape version 4.6x address book into Outlook Express, you may be unsuccessful, and you may receive the following error message:
The address book could not be automatically detected. Would you like to manually select the address book file?
This issue can occur because the file format of the Netscape Address Book has changed from .nab to .na2, and Outlook Express does not recognize this file format.
To import a Netscape version 4.6x Address Book into Outlook Express:
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