Double and triple birthdays in calendar

Question

Double and triple birthdays in calendar

I have on my iMac Double and triple birthdays in calendar. The problem happened after I upgraded yesterday to Big Sur. I cannot get rid of that. Looked all over the web. On my iPhone 12 mini, it looks OK: each birthday only once. The quantity of my contacts looks OK on "All on my Mac" and on the list of "All iCloud", except on "All Contacts"-there I have doubles and triples . So I guess that would be the reason for those triples and doubles birthdays on my calendar.

Any solution would be appreciated.

iMac 21.5″ 4K, macOS 11.3

Posted on May 1, 2021 12:53 AM

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Answer 1

Old Toad

Level 10

210,255 points

May 1, 2021 1:14 PM in response to Community User

Boot into Safe Mode according to Start up your Mac in safe mode - Apple Support and see if the problem persists. Reboot normally and check again.

NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following;

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

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts

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

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Answer 2

PRP_53

Level 10

90,889 points

May 1, 2021 2:10 PM in response to Community User

If you see duplicate contacts after setting up iCloud Contacts

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Answer 3

May 2, 2021 11:01 PM in response to Community User

Thanks for all the advices. I am not confident enough to do alone drastic actions... I wonder if there is a support for this annoying problem. I could not find Apple real time help.

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Answer 4

May 1, 2021 12:38 PM in response to PRP_53

Thank you P.P. , but this did not solve the problem. I get "No duplicates were found".

Earlier today, I solved partially the problem, by manually deleting every double contact that appears in my Birthdays Calendar. So in my Calendar it looks fine, but in my contacts, the list of "all contacts" has doubles, 2076 cards all together including doubles. iCloud list include 1377 contacts, no doubles. And "All on my Mac" list includes 1347 contacts, no doubles. Any thoughts?

Nuki

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Answer 5

PRP_53

Level 10

90,889 points

May 1, 2021 12:48 PM in response to Community User

The ones On My Mac are those that reside on the Mac ONLY.

Those residing on iCloud are those that are Syncing with Other Apple Devices you own and are using the same Apple ID.

One an safely remove all those On My Mac and thusly reduce the Contacts count by 50%

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Answer 6

May 2, 2021 11:08 PM in response to Community User

Right now, the specific problem is : 11 contacts that I care for their Birthdays, appear on my Calendar on the Birthday few times, instead of one line, 2 times, three, and even 4........ Others are OK (one line). Very strange.

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Answer 7

PRP_53

Level 10

90,889 points

May 1, 2021 2:34 AM in response to Community User

Make a Time Machine Backup first. Open the Contacts Application and look on top Menu of Contacts >> Card. Pop Down menu

" Look for Duplicates " and follow next instructions.

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Answer 8

May 2, 2021 3:16 PM in response to PRP_53

I get "No duplicates were found".

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Double and triple birthdays in calendar

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