Pixima TS9120 not printing envelope

[TERRYB]

The rear tray refuses to acknowledge the #10 envelope and tells me the paper size is not as listed but doesn't allow me to change the paper size to the envelope size.

[Patrick]

Hi TERRYB,

To print on envelopes with your PIXMA TS9120, please follow the steps provided in the manual:

https://ij.manual.canon/ij/webmanual/Manual/All/TS9100%20series/EN/UG/ug_l_01_05_c.html

Also, if you are attempting to print envelopes using Microsoft Word, please use these links:

https://support.microsoft.com/en-us/office/create-and-print-a-single-envelope-b766aa84-5b97-4f63-b03...

https://support.microsoft.com/en-us/office/print-an-envelope-b426d3dd-ab7e-40af-91b5-85158b08ad37?ui...

If you continue to have difficulties, please contact our support group using the following link:

https://mycanon.usa.canon.com

[TERRYB]

Thank you for the information.  Though it was a good start it did not result in the problem being resolved.  It seems that I had to go to a 'copy' of the installed printer to have it work correctly.  As that happened, I would think it has to be a conflict between Canon and MicroSoft.  Oh, the reason it took so long to reply is shortly after I posted and your answer I had my ssd ("c" drive for me) go out, resulting in a brand new installation of Win10.  That is why I believe there to be a conflict in the two companies code.