.NET Questions and Solutions

Symptoms
When you connect to a Web server using the Internet Protocol (IP) address or Fully Qualified Domain Name (FQDN) on the local network, Microsoft Internet Explorer or Windows Internet Explorer connects through an assigned proxy server even if the Bypass proxy server for local addresses option is turned on.
However, if you connect to a Web server using the host name (for example, http://webserver) instead of the IP address (for example, http://10.0.0.1) or FQDN (for example, http://webserver.domainname.com), the proxy server is bypassed and Internet Explorer connects directly to the server.
Resolution
By default, only host names are checked when the Bypass proxy server for local addresses option is turned on.

Symptoms
When you perform a search in Microsoft Clip Organizer, the list of results may appear slowly. You may notice this behavior whether your computer is connected to the Internet or your computer is not connected to the Internet.
Resolution
The clip art search results automatically include content from Clips Online. If your computer is connected to the Internet, it may take a moment to complete your search. The speed of the search depends on the speed of your Internet connection.
If you are not connected to the Internet, your computer still tries to access Clips Online. However, your computer cannot access Clips Online because it is not connected to the Internet. Therefore, it appears as if your search is taking longer than expected.

Symptoms
Consider the following scenario: You use forms-based authentication in Microsoft Internet Security and Acceleration (ISA) Server 2004 or ISA Server 2006 to publish a Microsoft Outlook Web Access (OWA) server. You use a third-party OWA add-in program to manage e-mail attachments.In this scenario, when client computers use OWA and download e-mail attachments, the computers cannot download attachments.Additionally,you may receive an error message that resembles the following:

Internet Explorer cannot download file from server.
Internet Explorer was not able to open this Internet site. The requested site is
either unavailable or cannot be found. Please try again later.
Resolution
This problem occurs because the ISA Server 2004 or ISA Server 2006 forms-based authentication filter adds a Cache-Control: no-cache header to all responses for Active Server Pages (ASP) page requests except for known requests that are used by OWA for attachment downloads. The Cache-Control: no-cache header is added to ASP page requests to avoid session problems that occur with some non-Microsoft browsers.
When you use a third-party OWA add-in program that uses ASP pages for attachment downloads, the Cache-Control: no-cache header that is added to the ASP page response prevents Windows Internet Explorer from caching the attached file. Therefore, Internet Explorer cannot download or open the file. For more information about this problem, click the following article number to view the article in the Microsoft Knowledge Base:
316431?(http://support.microsoft.com/kb/316431/) Internet Explorer is unable to open Office documents from an SSL Web site