renew expired certificate

[Isolna]

My HP color laser jet pro MFP M277dw has stopped communicating with my Mac Book Air. It says certificate has expired. What does this mean? And why doesn't HP provide a phone number so I can talk to someone who actually understands the problem so I can correct it? Does anyone have a support phone number for this issue?

[VikramTheGreat]

Hi @Isolna,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

Thank you for reaching out, and I'm sorry for the frustration this has caused.

The "certificate has expired" message is a known issue that can occur when accessing the printer's Embedded Web Server (EWS) or when the Mac communicates with the printer using a certificate that is no longer valid. Before pursuing additional support options, I would recommend following the HP support steps below, as they are specifically designed to address this issue:
 

Reset the Printer's Certificate

1. Open a web browser on your Mac.
2. Enter the printer's IP address in the address bar to access the printer's Embedded Web Server (EWS).
3. Sign in as the administrator if prompted.
4. Navigate to Networking or Security settings (depending on the firmware version).
5. Locate the certificate management section and follow the HP instructions to restore or regenerate the certificate.
6. Restart the printer after completing the process.

The complete HP guide for resolving expired certificate issues is available here: HP printers - 'Encryption Credentials Expired' error (macOS, iOS) | HP® Support

Regarding phone support, the HP Community is primarily a peer-to-peer and moderator-assisted forum, so support options available there can be limited. HP does offer additional support channels depending on your region and product status.
 

If you have HP Support Assistant installed on your computer, you can also use it to access available HP support options and contact methods for your device.
 

Please try the steps in the HP document first, as they are intended to resolve this specific certificate issue. If the problem persists afterwards, let us know exactly where the process stops or what message you receive, and we'll be happy to continue assisting.

I hope this helps.

Take care and have an amazing day!