I've got a user trying to open files from an external SharePoint 2010 site. They are able to log in, but when clicking on a file, nothing happens. Trying to figure out on which end the problem is. From another location and another computer (Same OS and IE), able to access fine. Still running ISA 2004 for firewall at the provlem location, could that alone be the issue? So far, have only seen information for ISA 2006 and SharePoint 2010.