When you attempt to send or receive messages using Outlook Express, you may receive any of the following error messages: If you then view the Internet Accounts dialog box, you may see a new news account and a new mail account both named "127.0.0.1." These new accounts may now be configured as your default mail and news accounts. If you try to alter these settings, your changes may not be saved, and the "Access the Internet using a proxy server" setting in Microsoft Internet Explorer may automatically be enabled when you restart your computer.

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This behavior can occur if Dr. Solomon's Anti-Virus Deluxe NetGuard program is installed on your computer and is configured to monitor downloads from the Internet. When you configure this program to monitor downloads, new default mail and news accounts are created in Outlook Express.

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To best resolve this issue, use the steps contained in the "Net Guard Troubleshooting Guide" for Dr. Solomon at the following McAfee Web site: As an alternative, you can work around this issue, by restoring your original mail and news accounts as your default accounts. To do so, follow these steps:

1.	In Outlook Express, click Accounts on the Tools menu.
2.	Click the Mail tab, click your original mail account, and then click Set As Default.
3.	Click the News tab, click your original news account, click Set As Default, and then click Close.
4.	Quit and then restart Outlook Express.

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For more information about how to configure your mail and news accounts, click the following article numbers to view the articles in the Microsoft Knowledge Base: You may also experience the behavior that is described in the "Symptoms" section when you install Norton AntiVirus 2000. To resolve this issue:

1.	In Outlook Express, click Accounts on the Tools menu.
2.	Click the Mail tab, click Server, and then change the incoming mail server from 127.0.0.1 to the correct server name.
3.	Remove and retype your user name and password.
4.	Quit Outlook Express, and then start it again.

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

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