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All of my text appears as question marks inside boxes on Google and other websites when I use Firefox.

投稿日時

Even though I haven't changed any settings or fonts/font preferences, Firefox has started (out of the blue) displaying all of the text on my screen as questions marks inside boxes. This happens on Google and many other websites, but not every website. For example, it happens on Google, while it does not happen on Facebook, but it happens when Facebook displays another website on its page. This first happened yesterday on my desktop iMac. My laptop (Macbook Pro), however, has been fine all day...until about 30 minutes ago, when it too began displaying all text as question marks inside boxes. I have read a lot of online forums to see what others have done in this situation, and I have tried most of the troubleshooting suggestions, to no avail.

Even though I haven't changed any settings or fonts/font preferences, Firefox has started (out of the blue) displaying all of the text on my screen as questions marks inside boxes. This happens on Google and many other websites, but not every website. For example, it happens on Google, while it does not happen on Facebook, but it happens when Facebook displays another website on its page. This first happened yesterday on my desktop iMac. My laptop (Macbook Pro), however, has been fine all day...until about 30 minutes ago, when it too began displaying all text as question marks inside boxes. I have read a lot of online forums to see what others have done in this situation, and I have tried most of the troubleshooting suggestions, to no avail.

選ばれた解決策

Hi, this is affecting quite a few Mac users.

Firefox 56 ratcheted up the security sandbox, limiting which files pages can use on your system. This apparently prevents Firefox from using font files in a "suitcase" or "Adobe Type 1" format. The developers are aware of this and considering solutions for a future version of Firefox.

For right now, you can reduce the sandbox security level back to what it was in Firefox 52-55 as follows:

(1) In a new tab, type or paste about:config in the address bar and press Return. Click the button accepting the risk.

(2) In the search box above the list, type or paste sand and pause while the list is filtered

(3) Double-click the security.sandbox.content.level preference and change the value from 3 to 1 and click OK

That change won't take effect until the next time you quit and restart Firefox.

Does that let Firefox show website fonts normally?

この回答をすべて読む 115

システム詳細の追加情報

アプリケーション

  • ユーザーエージェント: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Safari/604.1.38

詳細情報

jscher2000
  • Top 10 Contributor
解決数 8505 件 回答数 69476 件
投稿日時

選ばれた解決策

Hi, this is affecting quite a few Mac users.

Firefox 56 ratcheted up the security sandbox, limiting which files pages can use on your system. This apparently prevents Firefox from using font files in a "suitcase" or "Adobe Type 1" format. The developers are aware of this and considering solutions for a future version of Firefox.

For right now, you can reduce the sandbox security level back to what it was in Firefox 52-55 as follows:

(1) In a new tab, type or paste about:config in the address bar and press Return. Click the button accepting the risk.

(2) In the search box above the list, type or paste sand and pause while the list is filtered

(3) Double-click the security.sandbox.content.level preference and change the value from 3 to 1 and click OK

That change won't take effect until the next time you quit and restart Firefox.

Does that let Firefox show website fonts normally?

Hi, this is affecting quite a few Mac users. Firefox 56 ratcheted up the security sandbox, limiting which files pages can use on your system. This apparently prevents Firefox from using font files in a "suitcase" or "Adobe Type 1" format. The developers are aware of this and considering solutions for a future version of Firefox. For right now, you can reduce the sandbox security level back to what it was in Firefox 52-55 as follows: (1) In a new tab, type or paste '''about:config''' in the address bar and press Return. Click the button accepting the risk. (2) In the search box above the list, type or paste '''sand''' and pause while the list is filtered (3) Double-click the '''security.sandbox.content.level''' preference and change the value from '''3''' to '''1''' and click OK That change won't take effect until the next time you quit and restart Firefox. Does that let Firefox show website fonts normally?

役に立った返信

jscher2000 Thank you! That seems to have fixed the problem.

jscher2000 Thank you! That seems to have fixed the problem.