Hello Snicklefritz, try to reset the print_printer in Config Editor, and check it again.

we have a re-opened bug : https://bugzilla.mozilla.org/show_bug.cgi?id=429943

thank you

Thanks so much, that worked!

Please fix this bug since others use my computer and do not remember to change to my new HP 4500! I do not know about config, etc. RobAnn

After deleting the old HP 5900 printer last evening, it returned this morning. I deleted it through Control Panel. I do not see it in the software section of Control Panel. Where else should I delete it?

Here's an easy solution that worked for me.

I'm using Windows 7 and have two HP printers installed. I don't know whether this works for the Adobe PDF printer; Thunderbird has never defaulted to that for me.

In Control Panel, look for Hardware & Sound. Under that heading, click on View devices and printers.

Open (double-click) the printer you want to disable in Thunderbird.

Double-click on Customize your printer.

Click on the Advanced tab.

Choose Available from, and then choose a time when you don't typically print email (I chose 12am to 1am). I did not change the Priority setting.

Click Apply and then OK.

That should do it. I shut down and rebooted, and in Thunderbird the printer default is now the one I want.