I had 2 Windows 10 PC's just updated to Windows 10 version 1803 (April Update). On both of them, version 1803 broke Canon Maxify MB5120 network printing. The issue is that the first document you print will come out (all pages) but then the printer hangs with the message "Printing ... Use the [Back] button to continue with the device operation". This stays for 10 minutes or so but eventually times out. If you try to print somethig else during this time, it never comes out, even after the message goes away. The document stays in the print queue. Once you let the printer message time out, and you clear the print queue, and reboot your PC, sometime a new document will come out.
Network scanning was unaffected by Windows 1803, just printing is messed up.
Removing the printers and fax from the "printers and scanners menu" and successfully reinstalling the Canon Driver package did not help. The test page prints followed by the 10 minute (or so) hang as before
I reverted one PC back to Windows 10 version 1709 and it now prints to the MB5120 perfectly with no hangs, so it is definetly a Windows version 1803 issue and not an issue with the network or Canon MB5120 printer.
Note: Both PC's and the MB5120 are connected with Wired Etherenet. The MB5120 is using a fixed IP address via DHCP from the router..
