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

I am unable to print forms with numbers in them on Firefox. I can in Safari

  • 4 replies
  • 1 has this problem
  • 11 views
  • Last reply by tapelad

more options

When I try to print something like my 1099 tax form or any form with numbers in it I only get explanation or question marks where the numbers should be. It works alright in Safari. I have a mac desktop and the latest operating system of Mojave version 10.14.3. I have updated Firefox and reset Firefox printer settings. I have an Epson WorkForce 610 printer.

When I try to print something like my 1099 tax form or any form with numbers in it I only get explanation or question marks where the numbers should be. It works alright in Safari. I have a mac desktop and the latest operating system of Mojave version 10.14.3. I have updated Firefox and reset Firefox printer settings. I have an Epson WorkForce 610 printer.

Chosen solution

You can check for sandbox security issues when Firefox has a problem to access fonts installed locally.

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

  • 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.

See also:

Read this answer in context 👍 0

All Replies (4)

more options

Screenshot of the error?

more options

Chosen Solution

You can check for sandbox security issues when Firefox has a problem to access fonts installed locally.

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

  • 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.

See also:

more options

Thanks for the help but I have given up and deleted firefox from my computer.

more options

Sorry I didn't respond sooner but I was unable to attach a copy of the document in question so I finally gave up and deleted firefox off my computer.