necessary ports and programs are not being blocked by security or firewall 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)CanonCanon IJ Network ToolCNMNPUT.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)CanonCanon IJ Network Scan UtilitylCNMNSUT.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 FilesCanonMP Navigator EX** mpnex**.exe (** refers to version number) - (Windows)

/application/canon utilities/mp navigator.app (Macintosh OS X)

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avoid communication error

                                    Connecting the USB interface cable

                                       Connecting the cable to the printer or peripheral device

                                                Connecting the cable to your computer
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