https://community.usa.canon.com/t5/Printer-Software-Networking/Canon-TS6420a-New-Bad-Security-Certificate-Error-When-Trying-To/m-p/555648#M24387 <P>Two weeks prior to this, I reset my <STRONG>Canon TS6420a</STRONG>&nbsp;printer due to it not printing double-sided while setting it to do so on both the printer and device. Tonight I tried to reconnect it to wifi through the Canon PRINT app on a Chromebook. While it would not queue the print from the Chromebook, from my phone it said that it tried to present a new security certificate. Is this normal, or is it a concern?</P> <P>For reference, I am trying to print sheet music from Chrome OS and from a Samsung Galaxy phone. Below is a screenshot:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="screenshot" style="width: 400px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/68040iA3574D8257B96671/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot_20250701_203517_One UI Home.jpg" alt="screenshot" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">screenshot</span></span></P> Wed, 02 Jul 2025 03:21:25 GMT LaylatheFHorn 2025-07-02T03:21:25Z https://community.usa.canon.com/t5/Printer-Software-Networking/Canon-TS6420a-New-Bad-Security-Certificate-Error-When-Trying-To/m-p/555648#M24387 <P>Two weeks prior to this, I reset my <STRONG>Canon TS6420a</STRONG>&nbsp;printer due to it not printing double-sided while setting it to do so on both the printer and device. Tonight I tried to reconnect it to wifi through the Canon PRINT app on a Chromebook. While it would not queue the print from the Chromebook, from my phone it said that it tried to present a new security certificate. Is this normal, or is it a concern?</P> <P>For reference, I am trying to print sheet music from Chrome OS and from a Samsung Galaxy phone. Below is a screenshot:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="screenshot" style="width: 400px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/68040iA3574D8257B96671/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot_20250701_203517_One UI Home.jpg" alt="screenshot" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">screenshot</span></span></P> Wed, 02 Jul 2025 03:21:25 GMT https://community.usa.canon.com/t5/Printer-Software-Networking/Canon-TS6420a-New-Bad-Security-Certificate-Error-When-Trying-To/m-p/555648#M24387 LaylatheFHorn 2025-07-02T03:21:25Z