Hi ljbanks56,
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 your PIXMA MG3520 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, please set the security software to allow access.
If the message does not appear on your computer, cancel set up, then set the security software to allow Canon software to access the network.
After setting the security software, try to set up the network communication from the beginning.
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 the issue persists, please check the settings of the access point for the network connection such as IP address filtering, MAC address filtering, or DHCP function. For details on how to check the settings of the access point, refer to the instruction manual supplied with the access point or contact its manufacturer.
Please note, Canon's Forum is not intended for immediate help, but a place to allow for the Community to give you assistance and feedback. If this is an urgent support need, please use the link below to reach our friendly Technical Support Team:
http://www.usa.canon.com/cusa/consumer/standard_display/contact_us_consumer
