MacBook Pro cannot print due to expired certificate error

Question

Level 1

4 points

MacBook Pro cannot print due to expired certificate error

I am running a 2021 MacBook Pro using Tahoe 26.6.2 It is linked on my home WiFi to a HP Color LaserJet MFP M277 dw. I also run an iPad and my iPhone on the same network.

I am now unable to print from my Macbook, although I can print from other devices. I receive an error message "Certificate expired - check printer for details" I have disconnected and reinstalled my printer and run a Wireless Network Test report which shows no errors [Message is: Congratulations you have successfully set up your network] I have also run a Network Summary report which shows no problems. As noted, I can print OK from other devices.

Can anybody tell me what is causing this problem and how to fix it? At this point I don't know whether to contact Apple or HP (I suspect Apple since other devices work OK.) My understanding is that the "Certificate" relates to network protocols, but that is beyond my knowledge range! Thanks in advance for any help or suggestions.

MacBook Pro 16″, macOS 26.6

Posted on Sep 2, 2026 4:49 PM

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Answer 1

leroydouglas

Level 10

206,618 points

Sep 2, 2026 5:59 PM in response to Billseattle

>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

credentials expired Hold the Option key—>AirPrint "Secure AirPrint" and "AirPrint".

ref: Encryption Credentials has Expired for Pr… - Apple Community

expired certificate issue—some options in this thread(s)

Encryption Credentials has Expired for Pr… - Apple Community

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Answer 2

Sep 2, 2026 6:38 PM in response to Billseattle

This usually means that a security certificate in the printer has an expiration date – and that expiration date has passed.

The fix involves asking the printer to generate a new security certificate with a later expiration date. Depending upon the printer, you might have to visit an embedded Web management site built into the printer, ,or use some printer-vendor-supplied application that talks to the printer and tells it to generate a new certificate.

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Answer 3

leroydouglas

Level 10

206,618 points

Sep 3, 2026 5:16 PM in response to Billseattle

Billseattle wrote:

Thanks. I was able to get half way through your instructions but ran into another problem. When I get to "Show printer webpage" I get a message that "Firefox was unable to connect to the server at ...." I have checked that Firefox has permission to connect to my printer (although couldn't find any reference to Certificates)

I run two browsers - Firefox and Safari - so I signed out of Firefox. However, as soon as I click "show Printer Webpage" Firefox opens automatically and I get the same message. I suppose I could uninstall Firefox and try again with only Safari ? Any further advice would be appreciated. Thanks

well if it helps your cause—

Set Safari as the default browser at least temporarily as opposed to uninstalling your Firefox...(?)

Make Safari your default web browser on Mac - Apple Support

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Answer 4

ckuan

Level 10

122,134 points

Sep 2, 2026 5:18 PM in response to Billseattle

Does the Printer supports AirPrint?

About AirPrint - Apple Support

https://support.hp.com/us-en/drivers/hp-color-laserjet-mfp-m277-series/model/7089949

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Answer 5

Billseattle Author

Level 1

4 points

Sep 3, 2026 4:52 PM in response to leroydouglas

Thanks. I was able to get half way through your instructions but ran into another problem. When I get to "Show printer webpage" I get a message that "Firefox was unable to connect to the server at ...." I have checked that Firefox has permission to connect to my printer (although couldn't find any reference to Certificates)

I run two browsers - Firefox and Safari - so I signed out of Firefox. However, as soon as I click "show Printer Webpage" Firefox opens automatically and I get the same message. I suppose I could uninstall Firefox and try again with only Safari ? Any further advice would be appreciated. Thanks

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