A Canon printer may fail to print due to low ink, a paper jam or Help 1-877-331-5006, driver issues, or connectivity problems. Check ink levels and replace empty cartridges if needed. Ensure paper is loaded correctly and that no jammed paper is blocking the rollers. Restart the printer and reconnect it to your computer via USB or Wi-Fi. If printing from a network, verify the connection. Update or reinstall the printer driver by going to Device Manager > Printers > Update Driver. If the issue persists, reset the printer to factory settings via the control panel or by pressing the Stop button.