Microsoft KB Archive/273716

= OLEXP: &quot;Wnmsgupdt Caused An Invalid Page Fault In Module Kernel32.dll&quot; Error Message When You Send an E-mail Message =

Article ID: 273716

Article Last Modified on 8/30/2007

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APPLIES TO


 * Microsoft Outlook Express 5.0

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This article was previously published under Q273716



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:

257824 OL2000: Differences Between Outlook and Outlook Express



SYMPTOMS
When you send e-mail with Outlook Express, you may receive the following error message:

This program has performed an illegal operation and will be shut down.

If you click Details, you may receive the following error message:

Wnmsgupdt caused an invalid page fault in module kernel32.dll.



CAUSE
This behavior can occur if you configure Outlook Express to use the ATT WorldNet Software Dial-Up Networking connector to connect to the ATT Internet service provider (ISP) service.



RESOLUTION
To resolve this behavior configure Outlook Express to use a local area network (LAN) connection instead of using the ATT connector that is included with the ATT software. To do this, either establish the connection to ATT before you start Outlook Express or create a new Dial Up Networking connector for the ATT service, and then configure Outlook Express to use that connector. For information about how to create an ATT connector, view the following Wurd Web site:

http://www.wurd.com

To create a new Dial Up Networking connector for the ATT service:


 * 1) Start Outlook Express, and then click Accounts on the Tools menu.
 * 2) Click the Mail tab, click ATT mail account, and then click Properties.
 * 3) Click the Connection tab, click the connection that you want from the box, and then click OK.



MORE INFORMATION
The Wnmsgupdt.exe file is the program file that is in the ATT folder that is created when you install the ATT WorldNet software. The current version of this software is available on the following ATT Web site:

http://download.att.net

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.

Additional query words: crash hang

Keywords: kbprb KB273716

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