Hello,

Have you followed this documentation? https://support.mozilla.org/en-US/kb/fix-printing-problems-firefox

If so, and if it didn't work, Can you share your Firefox version?

Thanks!

Yes. I followed the documentation -- several times. I'm using Firefox Quantum 69.0 64 bit. Thanks for your help.

Hello,

Please try creating a new Firefox profile: http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows

Let us know if that solved the issue.

Thank you but the problem still exists.

Anyone else have any thoughts? I can't even print to file or PDF.

Hello again,

Try reinstalling the driver of your printer from the manufacturer's website.

And would be nice to have an screenshoot of the error in order to get more information / context.

Thanks for your help. Surprisingly, Firefox updated itself a couple of days ago and now everything prints as it should. It never ceases to amaze me that programmers can never figure out that it's "their" program screwing up and not other ones, particularly when everything works well until an update comes along. Its called HUBRIS. Thanks for you help though.