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 cavab
  • 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

Seçilmiş Həll

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.