Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Font's display as ? Glyph in new Version 57.

  • 5 uphendule
  • 11 zinale nkinga
  • 108 views
  • Igcine ukuphendulwa ngu GraphicDough
  • Kusonjululiwe

GraphicDough
GraphicDough

I've downloaded the new version of Firefox (57) this morning and on most all sites the font's display as the ? with a box around it glyph. I tried to use the older versions 56.something and it did the same thing. I've not had this problem until the new update. I am running it on a OSX 10.11.6 El Capitan. I found a solution for version 56 but was unable to complete it. I then tried the 'Refresh Firefox' and that did not solve the problem either. I've attached a screenshot of the problem for reference.

I've downloaded the new version of Firefox (57) this morning and on most all sites the font's display as the ? with a box around it glyph. I tried to use the older versions 56.something and it did the same thing. I've not had this problem until the new update. I am running it on a OSX 10.11.6 El Capitan. I found a solution for version 56 but was unable to complete it. I then tried the 'Refresh Firefox' and that did not solve the problem either. I've attached a screenshot of the problem for reference.

Isisombululo esikhethiwe

can you try if this works as a workaround?: enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named security.sandbox.content.level. double-click it and change its value to 2 and restart firefox once.

Funda le mpendulo ngokuhambisana nalesi sihloko 👍 4

All Replies (5)

philipp
philipp
  • Moderator

hi, do you use any third-party font manager tools on your system?

GraphicDough
GraphicDough Umnikazi wombuzo

I use Font Explorer X Pro. Though I usually only have it open when working with Adobe products.

GraphicDough
GraphicDough Umnikazi wombuzo

I should have added it is version 5.0.2

philipp
philipp
  • Moderator

Isisombululo Esikhethiwe

can you try if this works as a workaround?: enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named security.sandbox.content.level. double-click it and change its value to 2 and restart firefox once.

GraphicDough
GraphicDough Umnikazi wombuzo

Update. I finally found out where to change the Security.sandbox that was suggested for version 56 in another post and it seems to have worked. (https://support.mozilla.org/en-US/questions/1181265)

However this dosen't seem to be the most effective and secure way to fix the issue.