Article ID: 231796 - View products that this article applies to.
This article was previously published under Q231796
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/EN-US/ )Description of the Microsoft Windows Registry
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 attempt to import mail messages from Outlook Express 4 into Outlook Express 5, the option to import messages may not be available.
This behavior can occur if Outlook Express 4 is not installed when Outlook Express 5 is installed.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To import Outlook Express 4 messages into Outlook Express 5:
(http://support.microsoft.com/kb/264872/EN-US/ )OLEXP: "No Messages Found" Error Message When You Import Outlook Express 4 Messages into Outlook Express 5
The Converter program checks the location defined in the registry for the mail store. If it does not find files from other versions of Outlook Express, it toggles a registry key that disables the Converter program.