IE11 embedded font won't work - tried all the usual approaches

Question

I have a set of embedded fonts that work fine in Firefox, Chrome, Safari - but, surprise, surprise, not in IE (v11, but tried in 10 and that didn't work either).

I can get some to load in IE, but not others. Sample of css:

/* working */
@font-face {
    font-family: 'FoundersGroteskWeb-Semibold';
    src: url(./fonts/FoundersGroteskWeb-Semibold.eot);
    src: url(./fonts/FoundersGroteskWeb-Semibold.eot?#iefix) format('embedded-opentype'),
        url(./fonts/FoundersGroteskWeb-Semibold.woff) format('woff');
    font-style: normal;
    font-weight: normal;
            }

/* not working */    
@font-face {
    font-family: 'FoundersGroteskX-CondensedWeb-Bold';
    src: url(./fonts/FoundersGroteskX-CondensedWeb-Bold.eot);
    src: url(./fonts/FoundersGroteskX-CondensedWeb-Bold.eot?#iefix) format('embedded-opentype'),
        url(./fonts/FoundersGroteskX-CondensedWeb-Bold.woff) format('woff');
    font-style: normal;
    font-weight: normal;
}

The fonts are served, all named correctly, etc. One difference I noticed is that all the other browsers were loading the woff file, whereas IE was using the (first, non #iefix) eot file. So I tried deleting all references to the eot files, forcing IE11 to use the woff. Again, it loaded the first one fine, but didn't use the second one (all other browsers loaded both with no problem).

When I check in the network tab on IE, I can see the 200 response for the first font, but there's nothing at all for the second font, looking like it might be choking on the parse of the css. However, given that the two declarations are identical apart from the font name, I can't see why that might be.

Anyone got any ideas what else I can try, because I've run out of straws to clutch at?

Answer 1

IE 9 (and I think 10 and 11 as well) have 31 character limit on font face name declaration. Please try and rename your font name to "FoundersGroteskX-CndWeb-Bld"; which is 30 characters, just to be safe (because this limitation of 31 characters is including quotes and semi-colon.