@font-face failed OpenType embedding permission check. Permission must be Installable

css fonts font-face

Jakub Holovsky · Mar 30, 2015 · Viewed 77.2k times · Source

This exception occurs in here. You can reproduce it in IE11. So far I have not found the cause of the issue. Any ideas why this is being caused?

enter image description here

CSS3114: @font-face failed OpenType embedding permission check. Permission must be Installable. File: 53d9eae5-63b4-48d7-a5b8-3419455028bb.ttf

The web site is running on Azure Websites platform and is using ASP.NET MVC 5.

Answer

Fixed by adding

<staticContent>
  <mimeMap fileExtension=".woff" mimeType="application/octet-stream" />
</staticContent>

under

 <system.webServer>

in web.config.

Edit:

to prevent any problems with consequent releases I recommend doing this:

<staticContent>
      <remove fileExtension=".woff" />
      <mimeMap fileExtension=".woff" mimeType="application/octet-stream" />
</staticContent>