"Invalid Certificate" with Brother printer and Tahoe 26.2

cwilson284 wrote:

Is anyone getting an "invalid certificate" message with a Brother printer after installing the latest Tahoe 26.2 upgrade? Apple says it's Brother's problem and Brother says "you don't need a certificate." Any help?

update the expired printer certificate using these steps:

>Systems Settings>Printers & Scanners

Printer name & select Printer Info>Options and Supplies

Show Printer Web Page;

if necessary make a security exception to continue Under Security> Certificates>Configure

Choose Create a New Self-Signed Certificate

(Edit the validity period if necessary) and click Finish

Change certificate trust policies on Mac - Apple Support

Which model Brother printer?

The certificates used for AirPrint are usually automatically updated.

If the certificate is not getting updated, resetting the network settings out on the printer usually clears it. How to do that can vary by model.

Maybe Brother means you don't need a certificate if you are not using AirPrint?

It sounds like you are using AirPrint, and you should be able to create a new certificate with the steps below:

Open System Settings, click on Printers & Scanners. Or use Print Center.

Click on the printer, open the Options & Supplies Tab, then the "Show Printer Web Page" Tab.

This will bring up the vendor site in Safari, which will then provide the opportunity to create a new self signed certificate.

Hope this helps.