I've only had this printer for a month, but I've squandered HOURS setting it up and keeping it up.
I can print OK, but the scanner utility just "falls off" the toolbar and has had to be downloaded and reinstalled twice since purchase.
Yesterday, I made my 4th call to support. We reinstalled the IJ Scan utility third time. And the Tech Support person, Blythe, explained that probably it was my antispam (I use Avast). She said it was a "known issue", so I'll post them here for others.
Here is the list of ports and programs that need to be set to a whitelist to prevent this scanner problem from happening again.
Blocked Ports and Programs
In some cases, third-party security or firewall software may be blocking or restricting port traffic or programs causing unexpected results such as inability to install or loss of functionality. Check with the software manufacturer for information on unblocking ports or adding exceptions for specific programs.
The following are ports and programs necessary for your printer to function properly.
Ports
TCP 80
TCP / UDP 8611
TCP / UDP 8612
TCP / UDP 8613
UDP 3702 - (Windows 7 / Windows Vista)
The following port list applies only to models with memory card slots
TCP / UDP 137
TCP / UDP 138
TCP / UDP 139
Programs
IJ Network Tool
Default location
c:\Program Files (x86)\Canon\Canon IJ Network Tool\CNMNPUT.EXE (Windows)
/library/printers/canon/bjprinter/utilities/canon ij network tool.app (Macintosh OS X)
IJ Network Scan Utility
Default location
c:\Program Files (x86)\Canon\Canon IJ Network Scan Utilityl\CNMNSUT.EXE (Windows)
/library/printers/canon/bjprinter/utilities/canon ij network scan utility.app (Macintosh OS X)
IJ Network Scanner Selector
Default location
/library/printers/canon/ijscanner/utilities/canon ij network scanner selector2.app (Macintosh OS X)
MP Navigator EX
Default location
C:\Program Files\Canon\MP Navigator EX**\ mpnex**.exe (** refers to version number) - (Windows)
/application/canon utilities/mp navigator.app (Macintosh OS X)
My Image Garden
Default location
C:\Program Files (x86)\Canon\My Image Garden\cnmigmain.exe (Windows)
/applications/canon utilities/my image garden.app (Macintosh OS X)
