PIXMA TS6400 Series: Paper size not supported by duplex printing function

[billc11]

Pixma TS6400.  Out of the blue, a printing error has popped up, updated drivers, etc., did not help.  The message states - "A paper size that is not supported by the automatic duplex printing function is selected.  Uncheck automatic on page setup tab of printer driver".    I haven't changed anything, any settings since the printer was set up, all has been good.  I haven';t a clue as to what the error message means, or how to fix.  Can anyone help?  Thx

[Arthur]

Hello!

So that the Community can help you better, we will need to know more information.


What is the exact model printer you're using (it's usually on the top or front of the unit)?

Any other details you'd like to give will only help the Community better understand your issue.
If you're in the United States, and this is an urgent support need, please click HERE to visit your My Canon Account to discover your personalized support options.
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Thanks and have a great day!

[DerrickL]

This should help you find the setting causing the error:

https://ij.manual.canon/ij/webmanual/PrinterDriver/W/TS6400%20series/1.0/EN/PPG/dg-c_duplex.html