ExtensionKit Error 15

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.

I had the same issue with my ethernet settings. However it could be solved as follows:

Go to settings -> network

click on the ... on the right below.

Add a service

Service Name: Ethernet 2

Interface: Ethernet

This will added as "not connected"

"Right" click on Ethernet

Select remove.

The new generated interface gets connected.

It is safe to rename the new interface back to Ethernet

Solved!

SAME here. Upgraded O/S and kaboom, bad news after that.

I ve done this and it instantly fixed my iMac 2017 booting issue. I’m appalled that a Mac update could let such an annoying issue occur. But thank you for being more helpful than Apple employees.

Success! go to network >> lower right corner of page to "...". then "add a new bridge."

Fixed, Whew!

I have had this same error warning since at least April 20th, 2023. I have reported it, and notified Apple Support of the issue..they are definitely aware of it, but I'm guessing they are still struggling to fix this situation.

At least for me, when I access my iCloud Account through the "Internet Accounts" tab in Settings...the iCloud settings page is much slower to operate especially when you compare the speed and efficiency that same settings page receives when instead being accessed through my AppleID settings. I have noticed though, that the times I never received the error message in Internet Accounts, was because I was exceptionally slow with my keyboard clicks and trackpad scrolls...

I don't get the message when I go to my other Internet Accounts Settings...the issue has only occurred when trying to access iCloud Account Settings.

If such is a similar case to you, then I might suggest simply ignore accessing your iCloud settings through Internet Accounts, and instead just access your settings through AppleID.

If such is not a similar situation to yours, then my suggestion would be to just maneuver around with as little scrolling and clicking around as possible, and just adjust whichever settings you need to adjust painstakingly slow.

Unfortunately, I don't believe there is really an actual "fix" to this just yet. There was some speculation online that it may be an "Intel Processor Issue" but I was confirmed by Apple Support when I was on the phone with them, that this issue persists even on the apple M1 chips.

Fine ! Just do the same with "Wi-Fi" and it's ok

thanks a lot

I also had "com.apple.extensionKit.errorDomain error 15"

For me, after a reboot (system got slow) my Keyboard Maestro would not work.

Requested permission Security & Privacy,

but adding it to the list did not take.

Solution appears to be:

Reboot in Recovery.

Do First Aid on MacHD (and also Recovery partition) (and also an external drive) .

Reboot normally.

All ok now.

I get this error when in "System Settings" > "Wallpaper" when clicking the button for selecting an album. It happens repeatedly and won't let me add wallpaper from Photos.

I have this same problem but with Screen Saver. I was browsing through some screen saver, picking and trying them one by one and this triggered as I selected one of them, 1st column, 2nd to the last row I believe. And ever since I am unable to set screensaver. This pops up every time I try to go into Screen Saver settings. Wallpaper works fine.

Carky fixed it. Resolved this by doing the following. You'll need the root password (you can reboot normally tho):

# FYI: save all your work you're going to reboot
# cleanup/backup the iCloud/Accounts directory
md ~/Desktop/tempjunk
mv ~/Library/Application\ Support/iCloud/Accounts/* ~/Desktop/tempjunk
# reboot and then first try to open Facetime, it should save and view your internet accounts.
sudo shutdown -r now

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.

Ugh. This is my EXACT issue. Did any of these work for you?

Dear clever people: I have exactly this problem. Please coach me to implement your solution. I opened the terminal and pasted these text strings in, but none would execute. For example, I started with

md ~/Desktop/tempjunk (and variations on that, like ~/Desktop/tempjunk)

I'm sure you all know what I did wrong. Please help