This article was previously published under Q233079
This article has been archived. It is offered "as is" and will no longer be updated.
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
When you start Outlook Express and choose to work offline in the Connection dialog box, you may receive the following error message:
An error occurred while establishing the Dial-Up Network connection
Even though you may receive this error message (and possibly additional error messages indicating that you cannot send or receive e-mail), you can ignore the error message(s) and continue to use Outlook Express in Offline mode.