The sender's name appears as Sender Unspecified or Unknown when you open an e-mail message in Outlook Express 6.0

When you open an e-mail message in Microsoft Outlook Express 6.0, the e-mail sender's name appears as Sender Unspecified or Unknown.

This problem occurs if the Norton Internet Security software is installed on your computer.

The Norton Internet Security software suite contains multiple products including antivirus and personal firewall software. Contact Symantec for more information about how to configure their software so that it is compatible with both Microsoft Outlook and Microsoft Outlook Express.

For more information, visit the following Symantec Web site:

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.