https://community.usa.canon.com/t5/Office-Printers/Can-t-register-my-MF743C-printer-on-support-site/m-p/539699#M26008 <P>Greetings,</P> <P>Look at your box.&nbsp; The serial number is on the side (sticker).&nbsp; If you don't have the box any&nbsp; longer, you can view the S/N in the Remote UI</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="shadowsports_0-1741738890861.png" style="width: 999px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/64985iFEAC22D0F72496A8/image-size/large?v=v2&amp;px=999" role="button" title="shadowsports_0-1741738890861.png" alt="shadowsports_0-1741738890861.png" /></span></P> <P>What is the exact error message you are receiving in the MyCanon Portal?&nbsp;</P> Sat, 15 Mar 2025 22:08:00 GMT shadowsports 2025-03-15T22:08:00Z https://community.usa.canon.com/t5/Office-Printers/Can-t-register-my-MF743C-printer-on-support-site/m-p/539684#M26007 <P>Every time I try to register my printer on the support site it says the SN isn't correct. I can't find any other number as detailed in "how to find my serial number."</P> Sat, 15 Mar 2025 20:31:34 GMT https://community.usa.canon.com/t5/Office-Printers/Can-t-register-my-MF743C-printer-on-support-site/m-p/539684#M26007 sdmund 2025-03-15T20:31:34Z https://community.usa.canon.com/t5/Office-Printers/Can-t-register-my-MF743C-printer-on-support-site/m-p/539699#M26008 <P>Greetings,</P> <P>Look at your box.&nbsp; The serial number is on the side (sticker).&nbsp; If you don't have the box any&nbsp; longer, you can view the S/N in the Remote UI</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="shadowsports_0-1741738890861.png" style="width: 999px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/64985iFEAC22D0F72496A8/image-size/large?v=v2&amp;px=999" role="button" title="shadowsports_0-1741738890861.png" alt="shadowsports_0-1741738890861.png" /></span></P> <P>What is the exact error message you are receiving in the MyCanon Portal?&nbsp;</P> Sat, 15 Mar 2025 22:08:00 GMT https://community.usa.canon.com/t5/Office-Printers/Can-t-register-my-MF743C-printer-on-support-site/m-p/539699#M26008 shadowsports 2025-03-15T22:08:00Z