FOURTEEN Duplicate address books on Mac Desktop hogging the CPU

Question

FOURTEEN Duplicate address books on Mac Desktop hogging the CPU

I too have the problem of massive duplications of my address book only on my 2017 Mac desktop—Not on my iPhone, laptop or iPad. I’m talking over 52,000 duplicate entries!!! So doing a search/merge is not working. My computer moves slower than a caterpillar. I tried the solution suggested to Jupiter— have signed out of iCloud and moved to next steps. But none of the address book files exist in my HD Library that I’m supposed to delete, per his instructions. ???? I must resolve this and have been looking everywhere online for solution. Help please?!!

iMac 21.5″, macOS 10.15

Posted on May 27, 2020 3:17 PM

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Answer 1

BDAqua

Level 10

250,259 points

May 27, 2020 4:42 PM in response to lauriefromwilmette

Safe Boot from the HD, (holding Shift key down at startup), does the problem occur in Safe Mode?

Safe mode attempts to repair Disks & clears lots of caches, so if Safe Mode works try again in regular boot.

You can save us asking dozens of questions by submitting a report...

EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.

http://www.etresoft.com/etrecheck

Pastebin is a good place to paste the whole report if you capture the URL while there…

https://pastebin.com/

Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

There is also free Malwarebytes which may take care of it...

https://www.malwarebytes.com/mac/

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Answer 2

BDAqua

Level 10

250,259 points

May 29, 2020 1:56 PM in response to lauriefromwilmette

Yes, we need more clues to figure out what may be doing it.

Also run the free Malwarebytes.

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Answer 3

May 29, 2020 1:17 PM in response to BDAqua

Thank you. I just tried restarting In safe mode. I cannot tell if that’s helping. I ended up manually deleting multiple duplicate groups in Contacts until I got to the point that I could do a “detect duplicates/merge” process. Took a LONG time. There are still 3 duplicate address books but no duplicate groups or Individual contacts. My mac is working much faster now and the various contacts functions aren’t eating up CPU.

However, I still see contactsaccountsservice gobble up 80-90+% CPU Every once in a while tho amd The computer immediately hangs.

i’d like to know however how it got to this so it won’t happen again. Altogether, I found FOUR address books on my Mac, each with duplicate/Triplicate groups and each of those groups with duplicate/Triplicate entries! I have a substantial number of contacts in my address book, So all that duplicating was insane!!

Do you still want me to do the Etre report?

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FOURTEEN Duplicate address books on Mac Desktop hogging the CPU

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