When accessed from XP i get Error Code: 502 Proxy Error. The request was rejected by the HTTP filter

Posted on 2012-08-22
Last Modified: 2012-09-10

We have microsoft ISA server 2006 in our network which is a proxy server for students and XP as client.

Iam trying to access a web site where students will be doing their test.The below is the link
to access the website.Before the test begins there is a setup check on the webpage on right hand top corner. when clicked it does a series of system and server communication checks
to make sure that there is no communication problem to carry out the test.

Under the asset download test, I have problem  opening Zip file.When i double click Zip file the i get the error  as shown below. Do i need to create a new rule in the ISA proxy server or edit the existing rule?. Iam not familar with the ISA server.

Network Access Message:The page cannot be displayed

Explanation: There is a problem with the page you are trying to reach and it cannot be displayed.

Technical Information (for support personnel)
Error Code: 502 Proxy Error. The request was rejected by the HTTP filter. Contact your ISA Server administrator. (12217)
IP Address:
Date: 22/08/2012 14:47:03 [GMT]
Server: ServerA-StudentProxy.domain.local
Source: web filter

Please help how to sort this
Question by:lianne143
    1 Comment
    LVL 23

    Accepted Solution

    Right click on the access rule and configure http filter.... try to uncheck "block high-bit character"

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