HP LaserJet Printer stopped working on my MacBook, after latest macOS Sonoma update.

@jblanchard1

I don't see crashes of dlpdaemon, I don't see "deny system-priviledge" in the console. Granting dlpdaemon full disk access doesn't help. It doesn't seem to have to do with dlpdaemon, but I'm not 100% sure. Something is killing the cups socket periodically, see here for more info: https://github.com/apple/cups/issues/6189

heinrich98 wrote:

The printer problem is not an HP or Canon Problem nor a problem of managed or unmanaged macs, It is a Sonoma 14.4 problem and i hope they will fix it with a new update.

It's not a general problem. Otherwise this problem would be big in the media and the forums full of it.

Of course it's a Sonoma 14.4 problem, but it only affects specific installations. Finding out patterns (e.g., does it depend on managed/unmanaged etc.) might help finding a workaround. Or maybe even some Apple developer might read this and get helpful info.

I uninstalled MS Defender from all Macs in our company with macOS 14.4 - and now the printers are back again.

Hope this helps you too.

I just moved MS Defender to the Download folder, rebooted, and didn't have the problem anymore. Now I moved it back to /Applications and still everything is working. Maybe there was already an over-the-air update of Defender today? Strange...

Might I ask those who deployed the update to multiple systems why you didn’t test before? When I worked for a very large company whenever a new Windows update was released it was weeks or months before we got the update installed on our work machines.

I solved the problem. My Mac got a wrong automatic ip, router ip and subnet after the Update, but was still able to go to the internet. But the printer was not reachable anymore. The wlan configuration didnt change and when i connect it with my iphone as my mac ,i get the right ip and subnet automatically. So i changed the ip, subnet and the router ip manually on the mac and everything works.

This is what did it for me. I had 2 printers installed and after going from 13.6 to 14.4 they completely disappeared. I could not re-add them. I gave com.microsoft.dlp full disk access and all of a sudden my printers re-appeared! Thanks so much for sharing this.

Thank you for sharing this. We ran into this issue at work recently and the fix posted here resolved the issue.

Our Jamf admin is pushing out a profile to update permissions for Microsoft Defender.

~Lyssa

Has anyone actually reported this via https://bugreport.apple.com? I don't see any FB numbers reported in this thread. Please be sure to report issue via Feedback Assistant. Don't assume someone else has just beause there are others sharing your concern in a forum post.

My MacBook Pro (and my wife's), Sonoma 14.4.1 lost all connection to all the printers available to me, not just the HP printer. I'm not running MSFT defender, nor is my CUPS daemon corrupted or missing. I just can't print anymore.

I tried resetting the printing system, all I got was that I had to re-setup my HP printer... which doesn't ever complete. So I now have two laptops (one Intel, the other Apple silicon) that neither one can print.

We are stuck generating PDF's and sending them to our iPhones or iPads to AirPrint. I used to be the other way around, I couldn't print from my phone but the laptop was golden.

I've been using Apple products since I had a Macintosh IIsi. This is the first time where I have seen a problem that Apple seems to not even acknowledge exists. I've had some pretty esoteric issues over the years, and somehow Apple seems to fix even the weird ones. I've been trying to search for a solution and haven't seen anything.

If anyone has had better luck than me, please let me know. I can be an idiot at times, but this one has me stumped.

In my case, the update to 14.4 broke the entire printing system. It does not seem related to drivers. What happens if you open a terminal and type "cupsctl"?

The printer problem is not an HP or Canon Problem nor a problem of managed or unmanaged macs, It is a Sonoma 14.4 problem and i hope they will fix it with a new update.

Are you absolutely sure about that? Then why is it not broken for me? I can use the Mac's CUPS implementation for all of my Macs with my HP printer, and my Mac mini is running macOS Sonoma 14.4.