Expired certificate error message and Serial number for printer giving me error message

[TZ123455]

Having issue with expired security certificate on Macbook - IOS 15.5. Serial number is giving me error message when I try to go to chat function. 

[zoey7886]

@TZ123455, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding Expired Security Certificate Error! 

We're thrilled to have the opportunity to assist you and provide a solution.  

It sounds like you're facing issues with expired security certificates and error messages related to your printer's serial number. Here’s what you can do to address these problems:

Expired Security Certificate Error

1. Update Software: Ensure your Macbook and printer have the latest software updates. Often, software updates can resolve certificate-related issues.
2. Check the Certificate: If specific to the printer, you might need to check the printer's embedded web server settings to see if there's an option to manage or renew security certificates.
3. Network Settings: Verify that your network’s settings or firewall aren’t preventing certificate updates or communication with the printer.
4. Reboot Devices: Sometimes, simply rebooting your devices (MacBook and printer) can aid in refreshing connection settings.  

Hope this helps! 

Take care, and have an amazing day!  

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Regards,