I'm getting an error related to URL http://server:80/_vti_inf.html* when i test the firewall rule for SharePoint 2010 connection on TMG server . All other path connections to SP site are fine.
Category: General error Error details: An unexpected response was received from the server. HTTP response: 400 Bad Request Action: Verify that the intended server is published and that virtual directories exist. Ensure that you can browse the published site directly from an internal client computer.
Any suggestions to fix this issue ?