Microsoft KB Archive/267570

= XWEB: Unable to View Items in Inbox When Accessing OWA Through a Proxy Server Using Internet Explorer 5 or Later =

PSS ID Number: 267570

Article Last Modified on 6/6/2003

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The information in this article applies to:


 * Microsoft Exchange 2000 Server

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This article was previously published under Q267570



SYMPTOMS
If you use a proxy server to connect to Microsoft Exchange 2000 Outlook Web Access (OWA), and you are using Microsoft Internet Explorer 5 or later, you are unable to see anything in your Inbox.



CAUSE
This behavior is a result of the proxy server that you are using. Full Web-based Distributed Authoring and Versioning (WebDAV) support is mandatory in order to access Exchange 2000 OWA through a proxy server with Internet Explorer 5 or later.



RESOLUTION
To find out which of the latest proxy servers fully support WebDAV methods, go to the following Web site:

http://www.webdav.org/other/proxy.html



WORKAROUND
Because earlier generation browsers (such as Microsoft Internet Explorer 4.x, and so forth) do not use WebDAV, you may not have experienced problems with them, even though you were using the same proxy server that is currently not working for Internet Explorer 5. However, with Internet Explorer 4.x and earlier browsers, you do not have the full functionality that OWA offers browsers that support WebDAV and Extensible Markup Language (XML).

Also, implementing Secure Sockets Layer (SSL) helps circumvent proxy servers that filter out unrecognized requests because they generally do not decrypt HTTP packets that are encrypted with SSL.



MORE INFORMATION
For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:

253615 XWEB: Using Browsers Earlier Than Internet Explorer 5 to Gain Access to Outlook Web Access

228836 Installing a New Certificate with Certificate Wizard for Use in SSL/TLS

Additional query words: loading

Keywords: kbprb KB267570

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch

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