Whenever I attempt to print something from Firefox (email, receipt, and so on), printing fails and I get the message "an unknown error occurred while printing." Printing from Internet Explorer works without any problem.
Solved! Go to Solution.
Try the reset described here:
Am having the same problem, and we've tried the reset and tried fully uninstalling FF and files and reinstalling, same problem. Prints from from IE, Chrome.....what else? I see alot of other people out on the web having the same issue. Window 7 64-bit, Firefox 3.6.15 (was 3.6.14), HP color laser printer.
Yes, I've read that the reset only works for a brief time after which the problem recurs. So far I'm still able to print but I don't expect that to last. I'd hate to have to open IE every time I want to print something.
I have this problem also but the reset did not work and I need to print from my online class if this is the way it is going to be give me back the old Fire fox or fix this problem it is not my fault everything was fine until up date to firefiox 4 I guess I will go back to internet explorer let me know when you fix this problem until then you lost me.
Does not work for me no kidding I want to remain with Mozilla what will you do to keep me as your customer or should I say your Guest!
I reset my firefox preference as directed & it worked. It had the wrong value under print.print_printer