The network security group at our company recently modified a server running foxweb 3.1 on Windows 2003 by removing the everyone group from some shares. This has caused a problem with accessing anything via the foxweb.dll (http://webserver/cgi-bin/foxweb.dll/show_cgi) ISAPI module.
When navigating to this URL the browser requests a username and password. No username and password works, all result in a re-prompt for a username and password. Clicking cancel displays the "HTTP Error 401.3 - Unauthorized: Access is denied due to an ACL set on the requested resource." error. Note this does not happen when accessing the same page via foxweb.exe (http://webserver/cgi-bin/foxweb.dll/show_cgi). Using foxweb.exe in the URL displays all pages correctly. Foxweb.exe and Foxweb.dll are in the same directory, the permissions are all the same and ISAPI is allowed for fwx files.