How do I troubleshoot a Canon printer that's offline on a Wi-Fi network?

Start by confirming the printer is connected to the same Wi-Fi network as your computer. Check the printer's display for Wi-Fi connection status. Restart the router and printer. Use the Canon printer's setup wizard (usually accessible through the printer's control panel) to re-establish the Wi-Fi connection. Ensure your firewall isn't blocking the printer's communication. You might need to add an exception for the printer's IP address in your firewall settings.