I have installed ISA Server 200 for several weeks. Some of my clients often encounter the following error when trying to access some websites, such as www.symantec.com, http://download.microsoft.com/download/win2000platform/SP/SP2/NT5/EN-US/W2KSP2.exe or some downloads in Microsoft website. HTTP 502 Proxy Error - The ISA Server denies the specified Uniform Resource Locator (URL). (12202) Internet Security and Acceleration Server -------------------------------------------------------------------------------- Technical Information (for support personnel) Background: The gateway could not retrieve the requested page. ISA Server: mykulpe2 Via: URL: http://download.microsoft.com/download/win2000platform/SP/SP2/NT5/EN-US/W2KSP2.exe Time: 11/19/2001 4:26:39 AM GMT Please help me to solve problem. i will appreciate your help. Thanks