I have a MG6850 multifunction Canon printer. Recently the Canon IJ Scan Utility has misfunctioned. I can scan the first page of a document without problem, but when I want to scan a second page of the same document by clicking on "Scan" in the small dialogue screen I receive the message "Failed to open a session on the device". I have re-downloaded and installed successfully the scanning software using mcpd-mac-mg6800-16_04_1_0 ea21_3.dmg installer software, but it has not resloved the problem.

I am using a MacBook Pro with Mac OS Catalina 10.15.3

Can anyone help me, please?