Can't remove 'unknown login items'?

Just upgraded to 10.13 and my Login Items window in Systems Preferences is filled with 'Unknowns.'User uploaded file

iMac, macOS High Sierra (10.13)

Posted on Sep 26, 2017 7:05 PM

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Posted on Oct 19, 2017 1:17 PM

Okay, they found the problem a couple of days ago. They know how to fix it, but as far as I know, they're not sure what caused it to happen in the first place (migration assistant is my guess).


Anyway, search out and destroy a file called backgrounditems.btm then reboot. The login panel should be cleared out. The senior advisor and I rebooted three times with a test app inserted through the normal login panel procedures and all was well. I added back my normal items and they'e still working just fine.


I'm on a new/used iMac late 2015 2.8ghz, I-5, running 10.13


Good luck.

44 replies

Oct 11, 2017 7:54 PM in response to RedmondGuy

I have try to start mac in safe mode and launch the chrome again, but the chrome still crash as above.


But if i create a new user(of course, the 'unknown login items' don't appeared) which launch a fresh-installed chrome, the chrome works fine. so, as you describe, it probably the chrome's crash was caused by System Preferences!


W T F ???😠

Oct 21, 2017 6:03 AM in response to Ally Gill

They are, supposedly, in the process of letting the masses know about this. Most frustrating, that's for sure; I, like many others here, spent many long nights pulling my hair out (and at my advanced age, I can't afford to do that too often) and cursing Apple (forgive me Father, I was rash). Getting to just the right senior engineer helped a lot. I was frustrated until I remembered my last visit to my son's business (PC only networking and systems repair for 18 years) and saw the chaos that reigns there almost daily--a good living, but frustration in seismic chunks.

Nov 5, 2017 12:15 PM in response to mlodger

It's back!


After updating my MacBook to


10.13.1 (17B48)


I have two unknown items in my Login Items, and two "known" items. I presume that the two "unknown" items are the two items that were there before the update to 10.13.1.


here's the catch / issue, though. There is no backgrounditems.btm on my machine.


Here's the error that I get in console.app:


### Error:18446744073709551581 File:/BuildRoot/Library/Caches/com.apple.xbs/Sources/AccountsPref/AccountsPref- 285/LoginItem.m Line:68

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Can't remove 'unknown login items'?

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