AOA. Respected all please help me in solving this type of issues. when some users want to visit some sites ISA Server return such type of error/Event ID.12004
•Error Code: 502 Proxy Error. A software error occurred for a Windows Internet extension application that is required for the current operation. (12004) .
Site is https://itknowledgeexchange.techtarget.com/itanswers.
and many more sites with same error.
I am running ISA Server 2004 Enterprise Edition with SP3.Is there any Port or Software installation(From window installation component) require on Window Server 2003 to resolve this issue. Please help me.