Security Update 2017-001 10.12.6 Problem- having problems with this update on my iMac. I keep seeing a message that the security update cannot be completed. After sever restarts and tries this is unresolved. Anyone having this issue and any tips

Question

Security Update 2017-001 10.12.6 Problem- having problems with this update on my iMac. I keep seeing a message that the security update cannot be completed. After sever restarts and tries this is unresolved. Anyone having this issue and any tips

iTunes and Safari updates completed but I repeatedly get a message saying the Security update was not completed. I have restarted 5 times and the update keeps downloading and completing but i still get the same message. Is anyone else experiencing this issue and are there any suggestions on how to resolve.

This issue is on my mid-2011 27-inch iMac.

iMac, iOS 10.12.6

Posted on Nov 11, 2017 7:54 AM

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Answer 1

Leanne_68

Community Specialist

Nov 12, 2017 1:59 PM in response to georgefromspring

Hello georgefromspring,

Thanks for that info and choosing the Apple Support Communities. If I understand correctly, you are unable to complete a software update on your Mac. To help resolve your issue, use safe mode to start up your Mac as it does the following things:

Verifies your startup disk and attempts to repair directory issues, if needed

Loads only required kernel extensions

Prevents startup items and login items from opening automatically

Disables user-installed fonts

Deletes font caches, kernel cache, and other system cache files

Log into your user account and try installing this software again while in safe mode. You may have to delete the existing software update in the Applications folder and download a new copy of the update from the Mac App Store.

Use safe mode to isolate issues with your Mac
Limited graphics performance in OS X recovery or safe mode

Cheers!

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Answer 2

Mac_slide

Level 3

605 points

Nov 29, 2017 10:53 AM in response to georgefromspring

I'm just now downloading it and it's showing that it's being installed... it's not finished yet

but I used the terminal to install, so you might try that route... but again, my install is still in progress.

OOOPS it finished.

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Answer 3

Nov 28, 2017 7:09 PM in response to Volvo V60 VOR

I have the same problem with my iMac 27in Late 2012 Sierra 10.12.6.

I tried twice to install the update and each time the update stalled after the restart with a zero progress bar. I left it for a long while thinking it was downloading something, but got no joy. The log files didn't show anything that I could make sense of.

Each time I had to re-install the Operating System. Shades of Windows XP!

I have installed the other updates that pop up in App Store but I am not going to attempt this "Security" update again.

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Answer 4

Nov 29, 2017 7:17 PM in response to IdrisSeabright

I tried the command line alternative and after the restart the log in stalled at about ¾ as before.

I started in recovery mode and ran first aid to no avail. I then started in single user mode and ran the tinker system command line scripts, which, luckily, I had previously installed. I used the tts tool to delete the caches. This seems to have worked because the system boots fine now.

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