Canon MX720 Series Online Manual page 43

Cannot Detect the Machine with the Wired LAN: Check 5
Does the firewall function of your security software or operation system for
computer interfere with setting up the network communication?
The firewall function of your security software or operation system for computer may limit communications
between the machine and your computer. Confirm the setting of firewall function of your security software
or operation system or the message appearing on your computer.
If the firewall function interferes with setting up:
• When the message appears on your computer:
If the message warning that Canon software is attempting to access the network appears on the
computer, set the security software to allow access.
Then click Redetect on the Check Printer Settings screen.
When the machine is detected, follow the instructions on the screen to continue to set up the network
communication.
• When the message does not appear on your computer:
Cancel to set up, then set the security software to allow Canon software* to access the network.
* Set the security software to allow Setup.app, Canon IJ Network Tool.app,
canonijnetwork.bundle, CIJScannerRegister.app, and CNNSelectorAgent.app to access the
network.
After setting the security software, try to set up the network communication from the beginning.
Note
For the operation system firewall settings or the security software firewall settings, refer to the
instruction manual of the computer or software, or contact its manufacturer.
If there is no problem with the firewall settings:
Go to check 6.
Cannot Detect the Machine with the Wired LAN: Check 6