topic Re: My Mac is showing "Invalid Certificate" on my PIXMA G6020 in Desktop Inkjet Printers

My Mac is showing "Invalid Certificate" on my PIXMA G6020

timurray2000 — Wed, 21 Jan 2026 14:43:00 GMT

I've used this printer for about 3 years and as of about a month ago, I get this and the printer won't do anything. There are no errors on the printer. It has a static IP address on my wifi network.

Re: My Mac is showing "Invalid Certificate" on my G6000.

Danny — Wed, 21 Jan 2026 14:33:56 GMT

Thanks for joining the conversation, timurray2000!

So that the Community can help you better, we need to know exactly which Canon printer model you're using within the PIXMA G6000 series. The model number should appear on the front of the printer just above the yellow ink tank window. That, and any other details you'd like to give will help the Community better understand your issue!

If this is a time-sensitive matter, click HERE search our knowledge base or find additional support options HERE.

Thanks and have a great day!

Re: My Mac is showing "Invalid Certificate" on my G6000.

timurray2000 — Wed, 21 Jan 2026 14:41:19 GMT

G6020

Re: My Mac is showing "Invalid Certificate" on my PIXMA G6020

Patrick — Mon, 26 Jan 2026 18:47:39 GMT

Hi timurray2000,

To resolve the "invalid certificate" error that you are experiencing, please follow the steps provided in this Knowledge Base Article:

Invalid Certificate Error Appears When Printing in macOS 26 Tahoe

If you continue to have difficulties, please contact one of Canon's Technical Support Representatives via phone or chat. To contact a Technical Support Representative, please use the link below to log into your My Canon account:

https://mycanon.usa.canon.com

Once logged in, click on your PIXMA G6020 and then click on the Product Support button. When that page loads, click on either the Phone Support button or the Chat Support button to access support.

Did this answer your question? If so, please click the Accept as Solution button below so that others may find the answer as well.

Re: My Mac is showing "Invalid Certificate" on my PIXMA G6020

timurray2000 — Mon, 26 Jan 2026 18:51:14 GMT

Thanks but this doesn’t work. My printer does show up in the last box - like it wants a driver or something.