We're working on preparing a new web server machine. When I browse to our main page on the new server using IE 11 on my Windows 8.1 workstation, the page doesn't render right. The same page renders fine in Firefox, in IE 10 on my older Windows 7 workstation, and in IE 11 on a colleague's pre-Windows 8 workstation.
I've verified that the HTML source for the page that IE 11 on Windows 8.1 receives is the same as the HTML source that IE 10 on Windows 7 receives.
Any ideas where I can look?