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duplex printing does not work

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  • 1 has this problem
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  • Last reply by jhy001

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Firefox 60.0 64 bit on MacOS 10.13.4 with Brother MFC-7860DW will not print duplex. File -> Print has a check box for Two-Sided but it hasn't worked in the latest version(s?). When will this be fixed?

Firefox 60.0 64 bit on MacOS 10.13.4 with Brother MFC-7860DW will not print duplex. File -> Print has a check box for Two-Sided but it hasn't worked in the latest version(s?). When will this be fixed?

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Did you uninstall and reinstall the printer driver/software? Printing is a printer software/driver issue. What version did you have before FF60.

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I don't think it is the printer driver software. I just did some more tests. The Chrome Browser and Safari print duplex just fine. Preview on the Mac prints duplex just fine. Every other application that I use to print print duplex just fine, as far as I know, except Firefox. So it seems the only common denominator is Firefox. My experience in replacing drivers to try to fix problems usually break more things than fix them. So I am reluctant to go that path right now. What I have been doing is using Print Friendly & PDF to print the page to pdf, and then print it with Preview as duplex. And I just did another test, I disabled this add-on and tested duplex printing again... it failed. So this add-on is not the cause either. Any more ideas? Sure seems to me to be Firefox. It has been this way for many weeks, I just hadn't got around to reporting it, hoping it would go away. I try to keep all software up to date, from MacOS, to Firefox, etc. on the assumption that newer is better.

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I forgot to mention, Thunderbird duplex printing also works fine. Another reason I don't think it is the printer driver.