I’ve had not a good day with web. It’s been throwing me curve balls whole day. One of things which wasted my time was Internet Explorer which is ran on a server OS.
I did not expect everything to go completely smooth, as it’s usual to have to go around IE enhanced security on server operating system if you wish to browse at all.
I’ve fired up IE’s debugger to see what’s going on, expecting that problem lies in MIME types configured in IE (or web.config file). However it turned out that IE did not request web fonts at all. There was no warning or notice in console either.
Problem was that IE does not even request web fonts unless host is added to list of trusted sites. Run to IE options, Security tab, select Trusted sites and add target host to the list. Problem should be solved