ISA Server connection problem

Hi,
My ISA server 2004 http,https,ftp rule has a problem.
When i add all authenticatited users to this rule, users can't open
webpages but when i add all users, everyone can access web.
I created AD connection verifier, it says "successful"
But i think there is a problem to verify users username and password from
AD.

What should i think about the problem?


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