This keeps haooening to me.
My 2 Windows 10 PCs are connected via wifi to my Maxify 2720 and when I try to print (some apps more than others) I'll get a "sending fax" message on the printer LC screen and nothing prints. The only way to clear the message is cancel the print job. It happens more often when printing large photos or from Firefox than other apps (such as Acrobat Reader) but its inconsistent. Removing and reinstalling the printer may fix the problem temporarily, but eventually it starts happening again. This is becoming very annoying. Is there an official response to this issue other than to remove and reinstall the printer driver repeatedly??
I was able to get my MB2720 to print again without reinstalling the driver by switching the Printer port to the IP address instead of the WSD port that the driver installed. I hope this is a permanent fix because the "Sending fax" just started happening to me today and I have had the printer about 2 years. Hope this helps.
I am having the exact same problem and it is very frustrating because my computer skills are very limited when it comes to problems of this nature. I switched from HP printers to the Canon because of my level of frustration with their products. I can't properly define my level of frustration. Needing a true step by step process to help me resolve this issue. Hate others are having this same issue but relieved to know that I am not alone.
I understand your fustration that when attempting to print the message "sending fax" appears on the screen. The following steps will assist you with resolving this issue:
To the Printer
To the Computer