HP Laser printer - Expired Certificate Error code (Mac OS)

[MacKatt]

HP LaserJet Color MFP (M477fdw) 2015 model ( 10 years old)

Current Firmware, network connected, website setup.

Mac OS Sequoia 15.5.      Mac M4 mini computer

Printer error only showed up in my printer queue, but not on the printer.

Nothin at the printer suggested any problems or errors.

Re-booted printer.

Reset time & date code.

Rebooted

Problem persisted.

Searched for other solutions about recreating the Certificate.  (Really ?)

Followed directions from several published solutions here in the support center, but none of them matched what I was seeing.

So, just FYI - here is what I did to re-create a new Certificate.

BTW, I have no idea what my printer IP address is or how to log into my printer's web page.

But, fortunately, there was a radio button with a link in the printer spooler:

When the webpage came up in my browser, I went directly to the "NETWORKING" tab (green bar on the top):

I went to Certificates and chose the top option to "Create a new Certificate".

It took about 20 seconds and the printer started making noises like it was resetting something . . . .

It didn't get weird until I tried to actually View the Certificate.

My Mac OS did not "trust" it.

Something about not trusting "unsigned certificates".

This is all foreign website network protocol - not my thing at all.

But, hey, it worked.

I hope this helps others. 

Two things that might help in the future:

1) Using HP Smart - I used to use it for scanning, but the Mac "Image Capture" utility works better and easier.

2) Print out the printer's details sheet if you need the IP address.  I didn't, but I probably should have done that.

Comment:
This is a stupid error, but there is no work around.
It basically renders your network printer useless until it's fixed.

it never should have happened, but by now, HP should have fixed this already !

[MacKatt]

P.S. I wasn't able to edit my post, above, but that "Certificate" shows it is out of date (June 30, 2025).

However, my printer didn't balk until July 8th, 2025.

I tried to screen print the new Certificate, but when I viewed it, I could not get back to the full view.

Some kind of buy prevented me from backspacing to the printer web page.

To get to "Show Printer Web Page...", open the Printer Queue, click on the printer, and then hit the 

"I" Information button on the top. It shows General printer information and Supply Levels.

The "I" button has the "Show Printer Web Page..." direct link.

Mine automatically logged in, so you may have to look up your original login account and password....

(I keep mine in a log book)

[MacKatt · Accepted solution]

P.S.

I just checked.

The new Certificate expires in 12 months!

so I guess I'll have to be doing this every year !?

[sunshine919]

Mac OS Tahoe HP Office Jet MPH 277dw was getting "expired certificate" error. Spent 3 hours trying things.  Here's what worked.

• Find IP address to printer on its screen it is solely some numbers like 2.3.3.01
• Take just those numbers and put them up in the URL bar. Don't need www.   It will open a special printer screen.
• Go to the "Networking" tab.
• Click on "Security"
• Click on "Certificates"
• Under "Printer Certificate" Click on Green "Configure" button.
• Click on the top one "Create a new self signed certificate"
• it then says the longest expiration date is 3650 days. Type in 3650 and "Enter" Go try and print. 

Before I found the responder's 2nd Youtube video I had, turned off and on the printer and laptop. Removed printer, added printer. Tried talking to the HP AI. Not able to help. Installed the HP App. Did not help. Tried other things. Didn't help. Just wanted to share and hopefully save someone time. 

[VikramTheGreat]

Hi @sunshine919,

Welcome to the HP Support Community.

Thank you for taking the time to share what resolved the expired certificate error on your HP OfficeJet printer. This information may certainly help others experiencing the same issue on macOS.

HP has an official document for the“Encryption Credentials Expired” or “Expired Credentials” error on macOS and iOS. The error can occur when macOS rejects an expired or corrupted printer certificate used for secure AirPrint/IPPs communication.

HP's recommended procedure is similar to the solution you found:

1. Enter the printer's IP address into a web browser to open the printer's Embedded Web Server (EWS).
2. In the EWS, first check that the printer's date and time are correct and synchronize them if necessary.
3. Open Security > Certificate Management. Depending on the printer/firmware, the certificate options may instead appear under the Network/Networking section.
4. Select the option to create a new self-signed certificate and complete the prompts.
5. Close the EWS and try printing again.

If the error remains, HP next recommends removing and re-adding the printer in Printers & Scanners, followed by checking for a printer firmware update. Additional steps are available in the HP document if the certificate error continues.

You can find the complete HP instructions here: HP printers - 'Encryption Credentials Expired' or 'Expired Credentials' error (macOS, iOS) | HP® Sup...

Thank you again for coming back to the community and sharing the solution that worked for you.

Take care and have a good day.