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Firefox 18 seems to be defaulting to Adobe PDF for printing even though the print.print_printer is set to the system default. Any ideas why and how to fix?

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On Windows 7 64 bit machines, we are seeing users that have Adobe Acrobat Pro installed where Firefox 18 is using the Adobe PDF as the default printer even though the print.print_printer is set to the correct system default printer.

Additional System Details


  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.57 Safari/537.17

More Information

This issue is not on my computer but others that I support at my company. I have attempted to right-click and Reset the print.print_printer but that has done nothing except to make that entry disappear in the about:config.