Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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.

last update of firefox wont display fonts in outlook web

  • 2 uphendule
  • 2 zinale nkinga
  • 6 views
  • Igcine ukuphendulwa ngu cor-el

more options

Version 60.01 installed this morning on a restart and I have not been able to see text in my outlook webmail...just question marks inside of boxes. What is the fix, has anyone else encountered this issue?

Version 60.01 installed this morning on a restart and I have not been able to see text in my outlook webmail...just question marks inside of boxes. What is the fix, has anyone else encountered this issue?

Isisombululo esikhethiwe

This can happen when Firefox has a problem to access locally installed fonts because of sandbox security issues.

You can set this pref to 2 or 1 on the about:config page to lower the sandbox security setting.

  • security.sandbox.content.level = 1
  • close and restart Firefox to make the change effective.

If '1' still doesn't have effect then try '0' to disable the sandbox.

If this didn't work then undo/reverse the change and reset the pref via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

Funda le mpendulo ngokuhambisana nalesi sihloko 👍 0

All Replies (2)

more options

Does it do the same on other Browsers?

more options

Isisombululo Esikhethiwe

This can happen when Firefox has a problem to access locally installed fonts because of sandbox security issues.

You can set this pref to 2 or 1 on the about:config page to lower the sandbox security setting.

  • security.sandbox.content.level = 1
  • close and restart Firefox to make the change effective.

If '1' still doesn't have effect then try '0' to disable the sandbox.

If this didn't work then undo/reverse the change and reset the pref via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.