Solved: Re: Expired Certificate - HP Support Community

igmorris · ‎01-01-2026

I have an M252dw laser printer which has been working fine for many years. Today it won't print and tells me that my certificate has expired. Why is this and how do I fix it.

VikramTheGreat · ‎01-03-2026

Hi @igmorris,

Welcome to the HP Support Community.

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

Your HP LaserJet Pro M252dw uses a self-signed security certificate to encrypt communications. Over time, that certificate expires, just like a passport, blocking your Mac or other devices from talking securely to the printer.

Step-by-Step: Renew the Certificate

1. Find Your Printer’s IP Address

On the printer control panel:
Settings → Network → Wireless or Wired (depending on your connection), then note down the IP address.

2. Open the Printer’s Web Interface

On your Mac:
System Preferences → Printers & Scanners → select your M252dw → Options & Supplies → Show Printer Web Page.
Or enter the IP in a browser’s address bar.

(macOS might display a “certificate not trusted” warning; just click “Advanced” → “Proceed” to move ahead.)

3. Generate a New Self-Signed Certificate

In the web interface:

Go to Network → Advanced Settings → Certificates.
Click Configure (next to “Printer Certificate”).
Choose Create a New Self-Signed Certificate.
Set the validity to the maximum (e.g., 3650 days or 10 years).
Click Apply and wait a couple of minutes for it to finish.

4. Restart & Reconnect

Restart your printer.
On your Mac, resume the paused print job, and everything should flow smoothly now.

HP Guide for more help: HP printers - 'Encryption Credentials Expired' error (macOS, iOS) | HP® Support

I hope this helps.

Take care and have an amazing day!

Did we resolve the issue? If yes, please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!

Regards,

VikramTheGreat

I'm an HP Employee.

If this reply helped resolve your issue, please select the Accept as Solution as it helps others in the community quickly find the answer they’re looking for.

And if you found this reply helpful, clicking Yes below is a great way to let us know we’re providing the support you need, as it encourages us to keep improving and sharing helpful guidance.

View solution in original post

VikramTheGreat · ‎01-03-2026

Hi @igmorris,

Welcome to the HP Support Community.

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

Your HP LaserJet Pro M252dw uses a self-signed security certificate to encrypt communications. Over time, that certificate expires, just like a passport, blocking your Mac or other devices from talking securely to the printer.

Step-by-Step: Renew the Certificate

1. Find Your Printer’s IP Address

On the printer control panel:
Settings → Network → Wireless or Wired (depending on your connection), then note down the IP address.

2. Open the Printer’s Web Interface

On your Mac:
System Preferences → Printers & Scanners → select your M252dw → Options & Supplies → Show Printer Web Page.
Or enter the IP in a browser’s address bar.

(macOS might display a “certificate not trusted” warning; just click “Advanced” → “Proceed” to move ahead.)

3. Generate a New Self-Signed Certificate

In the web interface:

Go to Network → Advanced Settings → Certificates.
Click Configure (next to “Printer Certificate”).
Choose Create a New Self-Signed Certificate.
Set the validity to the maximum (e.g., 3650 days or 10 years).
Click Apply and wait a couple of minutes for it to finish.

4. Restart & Reconnect

Restart your printer.
On your Mac, resume the paused print job, and everything should flow smoothly now.

HP Guide for more help: HP printers - 'Encryption Credentials Expired' error (macOS, iOS) | HP® Support

I hope this helps.

Take care and have an amazing day!

Did we resolve the issue? If yes, please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!

Regards,

VikramTheGreat

I'm an HP Employee.

If this reply helped resolve your issue, please select the Accept as Solution as it helps others in the community quickly find the answer they’re looking for.

And if you found this reply helpful, clicking Yes below is a great way to let us know we’re providing the support you need, as it encourages us to keep improving and sharing helpful guidance.

igmorris · ‎01-03-2026

Thanks very much - took a couple of goes but got there in the end. Phew.

Still don't understand the purpose of these certificates and why I had to go through this.

VikramTheGreat · ‎01-03-2026

Hi @igmorris,

You’re very welcome, and well done for sticking with it. I know it took more effort than it should have, so phew is absolutely the right word here.

If anything similar crops up again, feel free to reach out, and hopefully next time it won’t take “a couple of goes” to get there. Thanks again for your patience and for sharing your experience.

Take care and have an amazing day!

Did we resolve the issue? If yes, please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!

Regards,

VikramTheGreat

I'm an HP Employee.

If this reply helped resolve your issue, please select the Accept as Solution as it helps others in the community quickly find the answer they’re looking for.

And if you found this reply helpful, clicking Yes below is a great way to let us know we’re providing the support you need, as it encourages us to keep improving and sharing helpful guidance.

Expired Certificate

Create an account on the HP Community to personalize your profile and ask a question