cannot print in duplex with the MX340

[operafan]

I moved up to Windows 8.1 and installed the new drivers. All works well, except I cannot print in duplex mode.

[Danny]

Hi, operafan!

So that the Community can help you better, we need to know which applications you're trying to print from. That, and any other details you'd like to give will help the Community better understand your issue!

If this is a time-sensitive matter, our US-based technical support team is standing by, ready to help 24/7 via Email at http://bit.ly/EmailCanon or by phone at 1-800-OK-CANON (1-800-652-2666) weekdays between 10 AM and 10 PM ET (7 AM to 7 PM PT).

Thanks and have a great day!