I get the message "com.apple.extensionKit.errorDomain error 15." on my MacBook Pro macOS Ventura when I try to access Internet Accounts.

Ok so I found out my problem has something to do with external monitor and/or USB hub, after unplugging and replugging everything it works as intended.

Just as a reference I am using the following hardware:

• 2021 Macbook Pro 14" M1 Pro on MacOS 13.4.1.
• Samsung Neo G8 via USB-C to DisplayPort 1.4 (clamshell)
• UGreen USB-C Hub for Gigabit ethernet.

I had the same problem. These steps solved it for me, completely.

1. Back up your data in an external hard disk. Complete. Simple copy-paste. Whatever's there.
2. Go to 'System Settings' > 'Transfer or Reset' > 'Erase All Content and Settings.
3. Follow the on-screen prompts, and completely reset your MacBook. This will permanently delete your personal data (hence, the backup in Step 1), and will make your MacBook, as if it was out of the box, completely new.
4. This should do it.

Again, make sure to simply backup your data in an external hard disk; a simple copy-paste.

Hope it helped. It did for me.

I was grateful for Old Toad's advice, but I followed it to no avail. An Apple saleperson then told me that my problem was almost certainly caused by my attempt to migrate my data from a recent Mac with a Silicon processor to a somewhat older one, running on an Intel chip.

He said such transfers would inevitably cause conflicts. I'd be interested to know if this is true, and if it is I feel that Apple ought to warn people of it. That would certainly have saved me a rather long day of hassle.

Another element which may or may not be significant is that I didn't reset the Intel Mac before transferring my data to it.

Needless to say, the whole business has been a bit expensive, as I found myself buying a new machine, something I hadn't intended to do quite so soon.

Just opening up the Migration Assistant seemed to kick start this problem for me. I bought a new M1 mac mini and was going to transfer data from my M1 macbook pro, so the difference in the chip tech is definitely not a fair explanation. The thing is, I DIDN'T even transfer anything, and the problem is now on my mbp. And I can't access the network settings.

After my e-mail was basically blocked by the problem, I didn't try to reinstall the system on my Intel MacBook Pro. As I urgently needed an operational Macbook to travel, and had in any case been planning to buy a new portable after my trip, I simply rushed down to the AppleStore to make the purchase earlier.

I successfully transferred my data to the new MacBook via a TimeMachine backup taken from the Mac Mini, rather than using Migration Assistant. I therefore have no idea whether my problem was caused by using Migration Assistant.

Sorry not to be more precise, but I was doing things in a hurry, and this business is way above my technical abilities!

My version of the error comes in the form of a repeated request to "Do you want the application “java” to accept incoming network connections?" When I went to network > firewall to allow Java to accept incoming connections, it threw the com.apple.extensionkit error. Agree, my system is essentially bricked until this is solved.

I'm having the same issue on my desktop, laptop, iPad and iPhone after the latest updates for iOS and Monterey. No help from any of the articles and solutions suggestions from apple support. Devices freeze and have to literally shut them down with the power button.

In my case it was SonarQube, which is a quality assurance tool for computer programmers. It was running a Java process that began on startup, so rebooting was restarting both the computer and the pesky process.

I guess the suggestion I have is to check what's starting up when you start up. The process that started on startup was running a SonarQube daemon that restarted the process every time I killed it with "kill -9 xxxx".

From what I can tell from the comments, I'm not so sure it's the same thing causing it on all of our computers. That's why I said your mileage may vary, ha ha?

Hallo, hat das Problem jetzt wer lösen können? Ich habe das selbe Problem und bekomme den Fehler nicht weg!!

Hello, has anyone been able to solve the problem now? I have the same problem and can't get rid of the mistake!!

Since the 13.3 update the screen saver doesn't work anymore and when I go to the settings the settings are frozen and I'm getting this:

Einstellungsfehler - Der Vorgang konnte nicht abgeschlossen werden. (com.apple.extensionKit.errorDomain-Fehler 15.)

Does anyone have a fix or should I wait for 13.4?

I have been in deep trouble on this since having restarted after macOS 13.3.1(a)

Installation completed seemingly without a hitch.

Duh, no.

Upon the very first restart after the 13.3.1(a) update when the system loads itself, a scratch came into my view. Most likely outdated driver(s) in /System/Library/Extentions/ with .kext extension dose some harm on my machine, MacBook Pro 15” 2017.

There I have been experiencing Touch Bar lit off so I have no control over the keyboard lights, volume, etc. Especially troubling is Toch ID. FYI, safeboot dose right thing and troubles gone away.

And all my passwords stored in the keychain completely gone. I can not get mail messages because having not been successful in logging intoIMAP servers including Apple, Google or whatsoever.

All Cloud services are denied of accesses.

I believe getting rid of the troublesome driver kext files. But the problem is I don't know which to stay and which to go.

I’m having the same issue. My emails are no longer searchable in the apple mail app, which means I can no longer work. I have RE built my brand new Mac book pro and still getting the same error. This is so frustrating. Ever since the lastest upgrade to Ventura and 13.3.1. Apple needs to fix ASAP and fix the mail app!

Hi ScOtRa00,

Well, re-installing from scratch, i.e., clean-install, and go some updates are often told a better way. The next best thing is use the help of TimeMachine's backup.

You know many application support files, and drivers had been cumulated over the years, and in most cases, you can not even find installers et al for the applications you have been counting on. So, in a sense above solutions can be an overkill.

You open System Settings -> General -> Information -> macOS pane -> rightmost lies an information mark with "i" in a circle. You can click on it. Then a dialog appears that gives you the choice between staying with the current version of macOS (with some updates installed) and getting rid of the last update that seems the culprit. It deed wonderfully worked on me. The problem is I am still facing hazardous malignant outside attacks that use the macOS' fatal flaw because you are now without the latest and greatest update unpatched.

my two cents.

raydot Said:

"ExtensionKit Error 15: I resolved it. Took some digging in the Terminal window with the ‘ps’ command and killing some processes that were running but shouldn’t have been. Your mileage may vary."

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What are these commends you speak of?

The "com.apple.extensionKit.errorDomain error 15" prevented me to update MacOs from 13.3.1 to 13.4 on a M1 Macbook Pro.

My remedy:

I just searched for "extensionkit" using the activity monitor and instantly killed the applications which utilized the "extensionkitservice". To be sure, I also killed any orphaned "extensionkitservice" process too. The MacOS could be updated successfully afterwards.