How to Get Canon PIXMA Printer Online From Computer? (Easy Steps)
A Canon PIXMA Printer may go offline for many reasons, such as connectivity issues, outdated printer drivers, incorrect settings, or other common causes. When this happens, the printer may display a “printer offline” error on the screen or the connected computer. In some models, the Wi-Fi light may turn off, indicating an offline issue.
Source: https://sites.google.com/view/pixmaprinter/blog/how-to-get-canon-pixma-printer-online-from-computer-easy-steps