I am trying to add RSS Viewer web part to my MOSS page, and getting this error: ProtocolError occured trying to complete the request. The server returned a status code of : ProxyAuthenticationRequired and the status description is : "Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. )" I have this in my web.config: <defaultProxy> <proxy autoDetect="true" /> </defaultProxy> And, I have changed the authentication provider from NTLM to Kerberos, but still does not work. Any clues? Thanks, Kiran

please try this, and add on your web.conifg <system.net> <defaultProxy> <proxy proxyaddress="http://Proxy_Server:port" bypassonlocal = "true"/> </defaultProxy> </system.net> http://technet.microsoft.com/en-us/library/cc288254.aspx Topic: Allowing Access to the Online Web Part Gallery from Behind a Proxy Server or Firewall Hope this help.... Andr Lage Microsoft SharePoint and CRM Consultant Blog:http://aaclage.blogspot.com Codeplex:http://spupload.codeplex.com/http://simplecamlsearch.codeplex.com/

This isn't a customization question (you are adding a standard function to a web site) so I'm moving it to Admin.WSS FAQ sites: http://wssv2faq.mindsharp.com and http://wssv3faq.mindsharp.com Total list of WSS 3.0 / MOSS 2007 Books (including foreign language) http://wssv3faq.mindsharp.com/Lists/v3%20WSS%20FAQ/V%20Books.aspx

That did not help. Any other ideas?

The OOTB RSS Viewer web part does not support proxy authentication, you may setup access rules on your proxy server to allow outbound request from your SharePoint server.

Hi! As GuYuming said, the standard RSS Viewer only works with Kerberos. You could use this RSS Reader from CodePlex instead: http://feedreader.codeplex.com/It works like a charm!/Jenny

I already have Kerberos enabled on the server.I have the same portal on a different server, and the OOTB RSS Viewer webpart works fine there. I only have this problem on my dev server. So, I have tomake the OOTB webpart work on the dev server. Thanks,Kiran

The RSS Viewer web part fetch the RSS source with the account of the web application pool. Can this account pass the authentication of the proxy server?

Hi KiranSR, Curious if you ever solved the issue? I have the same problem and have enabled Kerberos and tried various settings in the web.config file and it makes little difference. Thanks!