Article ID: 247335 - Last Review: May 14, 2007 - Revision: 5.2 OLEXP: Outlook Express Cannot Connect to Hotmail through Proxy ServerThis article was previously published under Q247335 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
(http://support.microsoft.com/kb/257824/EN-US/
)
OL2000: Differences Between Outlook and Outlook Express SYMPTOMS
When you try to use Microsoft Outlook Express 5.0 to connect to a Hotmail e-mail account, you may receive one or more of the following error messages:
Unable to poll for new mail messages on your HTTP server. Account 'Hotmail', Server 'http://services.msn.com/svcs/hotmail/httpmail.asp', Protocol HTTPMail, Server Response: 'Proxy Authentication Required', Port 0, Secure (SSL): No, Error Number: 0x800CCC37
-Or-
Outlook Express Your proxy requires you to authenticate. Contact your network administrator for assistance.
-Or-
Outlook Express Clients using an ISA server as a Firewall and Web proxy server may see the following error:
Unable to poll for new messages on your HTTP server. Account: 'Hotmail', server : 'http://services.msn.com/svcs/hotmail/httpmail.asp',Protocol" HTTPMail, Server Response: 'Proxy Authentication Required (The ISA server requires authorization to fulfill the request. Access to the Web Proxy service is denied. )', Port: 0, Secure(SSL): No, Error Number: 0x800CCC37
CAUSE
This issue can occur if Outlook Express cannot authenticate you using Proxy Server and Access Control is enabled for Web Proxy.
RESOLUTION
To work around this issue, use one of the following methods:
STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
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