CSS @font-face in Internet Explorer
Fixing Issues with IE's OpenType Embedding Permissions Check
Attachments: embed.c,


When embedding fonts, IE will occasionally complain that the OpenType Embedding Permissions Check failed. This typically occurs with licensed fonts, and is Microsoft's way of preventing you from using a protected font. The problem is that this sometimes occurs even when you do have the necessary license, permission, etc.


This link will take you to the homepage of a simple Command-Line program, named Embed. The link includes the instructions for running the program, though I found the instructions on this page were more useful (I included the instructions, below). The second link also gives a bit more detail about the issue and the fix. Note that  if you are using a font file conversion tool, you should run embed on your .ttf file, first, and then convert the updated file.


The Embed program is a 32-bit program and the executable that is available for download will not run on a 64-bit machine. However, the author was kind enough to make available the original C source-code. For your convenience, I have attached the source-code to this post, as well as a zipped folder containing both the 64 and 32-bit versions of the embed program. 

Word of Caution

The Embed program overwrites the original font file with the new one, and I do not know if this can be undone. I recommend that you backup the original before you convert. 

Program Usage:

  1. Download the executable and move to the desktop with a copy of the font file.
  2. Pull up a command prompt window.
  3. Navigate to the desktop within the prompt
  4. Execute by typing: embed.exe fontfilename.ttf
  5. Viola, your font should be ready to use in IE9.
Post a Comment

  • Comment by Jared on Apr 02, 2014
    Where is the zip file with the 64-bit version of the program?
    • Comment by Zachary on Apr 02, 2014
      Sorry about that, Jared - I forgot to attach the files to the post. I just added them, and you can find the download links at the top of the page.
  • Comment by Roger on Apr 17, 2015
    Dude, clicking on the links just gives: 404 Page Not Found
  • Comment by Tomas J. Luis on Apr 20, 2015
    Thank you very much! It worked! \o/
  • Comment by Ali H. on Jun 17, 2016
    Thank you very much
  • Comment by oreso on Dec 03, 2016
    Thanks a million for this!
  • Comment by Joe Bongiorno on Apr 15, 2017
    Hi, when I try to download this (for the 64-bit version), I get an error that states: "Interrupted. Network Error." Can you see if there's anything wrong on your end?
    • Comment by Zachary Kniebel on Apr 20, 2017
      Hi Joe, thanks for letting me know. I confirmed that there is a bug and will look into it as soon as I can. In the meantime, feel free to email me at and I will send you a copy of the files directly.
  • Comment by Joe Bongiorno on Apr 20, 2017
    Thanks Zachary! You're the best!