If you ve thrown in the towel or you re still struggling with this I strongly recommend font squirrel. It replaces WEFT far better than any of the other online .eot generators. As a huge bonus, it supplies all needed cross-browser formats in one zip file along with a working CSS+HTML sample page. It s the closest thing yet to @fontface nirvana.

Remember that: .eot fonts must be the last one "src". If not, IE will rewrite the config and crash the font.

@font-face {
    font-family: "Aller Bold";
    src: url(fonts/Aller_Bd.ttf) format("truetype");
    src: url(fonts/Aller_Bd.eot);
}

This worked for me:

@font-face {
    font-family :  din-pro ;
    src         : url( ../fonts/din/DINPro-Medium.woff ) format( woff );
    src         : url( ../fonts/din/DINPro-Medium.otf ) format( otf );
    src         : url( ../fonts/din/DINPro-Medium.ttf ) format( truetype );
    font-weight : 500;
    font-style  : normal;
}

@font-face {
    font-family :  din-pro ;
    src         : url( ../fonts/din/DINPro-Regular.woff ) format( woff );
    src         : url( ../fonts/din/DINPro-Regular.woff2 ) format( woff2 );
    src         : url( ../fonts/din/DINPro-Regular.ttf ) format( truetype );
    font-weight : 400;
    font-style  : normal;
}
@font-face {
    font-family :  din-pro-ie ;
    src         : url( ../fonts/din/DINPro-Regular.eot? );
    font-weight : 400;
    font-style : normal;
}
@font-face {
    font-family :  din-pro-ie ;
    src         : url( ../fonts/din/DINPro-Medium.eot? );
    font-weight : 500;
    font-style : normal;
}

Notice that I defined the font for IE seperately with a -ie suffix. When using the font I would do something like p { font-family : din-pro, din-pro-ie }. Tested and working from IE5 forward using emulation.

Internet Explorer gets a bit iffy with the other @font-face definitions in there. I previously found this to be of amazing help - http://paulirish.com/2009/bulletproof-font-face-implementation-syntax/

In short, they recommend the best way is the following. The only change is to add a question mark at the end of the font url. Weird, no?

@font-face {
  font-family:  Graublau Web ;
  src: url( GraublauWeb.eot? ) format( eot ), url( GraublauWeb.woff ) format( woff ), url( GraublauWeb.ttf ) format( truetype );
}

There are a number of other alternatives listed, namely around specifying separate @font-face tags for the EOT file from the others.

I had the same issues many folks here encountered. The issue turned out to be simply that IE has a shorter character limit on the value of font-family. I gave my font-family a shorter name and it finally worked using the css that font squirrel spit out.

Weird one!

One thing you need to check is

.css file and .eot should be in same folder if you do url( HelveticaNeueLTCom-LtCn_0.eot )

or do full url path like src:url(http://www.example.com/path/to/url/Helvetica.eot)

Quotes are optional as far as I know.

ps# I am doing font embedding in my blog for long time, its working fine.

The best definition for font-face is:

@font-face {
  font-family:  Graublau Web ;
  src: url( GraublauWeb.eot? ) format( eot ), url( GraublauWeb.woff ) format( woff ), url( GraublauWeb.ttf ) format( truetype );
}

What worked for me is the following declaration:

@font-face {
    font-family:  Frutiger45LightBoldItalic ;
    src: local( ☺ ), url( ../font/frutiger-bolditalic-webfont.woff ) format( woff ), url( ../font/frutiger-bolditalic-webfont.ttf ) format( truetype ), url( ../font/frutiger-bolditalic-webfont.svg#webfontR2tDy7QH ) format( svg ), url( ../font/frutiger-bolditalic-webfont.eot );
}

So there is only 1 src attribute and .eot is at the end of it, without question mark.

What I tried before and didn t work:

• putting .eot on a separate line (before or after the other src)
• putting a question mark after .eot

You could convert your TTF font to the modern formats (ie. WOFF) using Transfonter and then use a strong @font-face like this:

@font-face {
  font-family:  MyWebFont ;
  src: url( webfont.eot ); /* IE9 Compat Modes */
  src: url( webfont.eot?#iefix ) format( embedded-opentype ), /* IE6-IE8 */
       url( webfont.woff2 ) format( woff2 ), /* Super Modern Browsers */
       url( webfont.woff ) format( woff ), /* Pretty Modern Browsers */
       url( webfont.ttf )  format( truetype ), /* Safari, Android, iOS */
       url( webfont.svg#svgFontName ) format( svg ); /* Legacy iOS */
}

Source: https://css-tricks.com/snippets/css/using-font-face/

IE won t accept a font that includes a format string in the src descriptor - that second src line could be the culprit. What happens if you remove it (or remove the format string?)

Next - sometimes, IE can be a bit pedantic about whether or not you use quotes around values in CSS. Try font-family: "HelveticaLTCN" instead?

I was having the same problem as panas. I converted from ttf to eot using onlinefontconverter.com. Well, it seems that was the problem: I just tryied fontsquirrel.com as atsjr pointed out and everything is working fine!

While struggling with a similar problem I ve noticed that somehow the DOCTYPE definition affects embedded fonts in IE. When I removed the DOCTYPE definition the font displayed properly.

this code could solve my problem in IE:

  @font-face {
      font-family:  kurdish ;
      src: url( font/zkurd_aras.eot? ) format( eot ), url( font/zkurd_aras.woff ) format( woff ), url( font/zkurd_aras.ttf ) format( truetype );}

It s always better to direct the font-face attribute locally and not online, e.g. url( ../fonts/font-name.eot ). IE and other browsers won t "see" the fonts when you are running your webpage on a local server.

One thing that is special about IE is that it requires the font-family name to be the exact same as the name found in the font s properties. While Chrome and others let you name the font-family what you want, that s not the case for IE