Microsoft KB Archive/284690

= The &quot;Automatically Detect ISA Server&quot; Option in the Firewall Client Is Unavailable =

Article ID: 284690

Article Last Modified on 1/30/2006

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APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2000 Standard Edition

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This article was previously published under Q284690



SYMPTOMS
When you install the firewall client on either a Microsoft Windows 95-based or Microsoft Windows NT 4.0-based workstation, you can observe that the Automatically Detect ISA Server option in the Firewall client options is unavailable. Even though you have already enabled Automatic Discovery on the server, when you restart the server, this option is still not enabled.



CAUSE
This behavior can occur because Winsock Proxy Autodetect (WSPAD) relies upon DNS for the transfer of information. However, if DNS fails, client computers that support remoting of Winsock calls can still use WSPAD. Because Windows 95-based and Windows NT 4.0-based workstation clients do not support remoting of Winsock calls, the Automatically Detect ISA Server option is unavailable.



STATUS
This behavior is by design.



MORE INFORMATION
Because remoting is supported on Microsoft Windows 98-based and Microsoft Windows 2000-based clients, the Automatically Detect ISA Server option is available to those clients.

For additional information about WSPAD Support, click the article number below to view the article in the Microsoft Knowledge Base:

260210 Description of WinSock Proxy Auto Detect Support

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Keywords: kbenv kbprb KB284690

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