Birthdays in Calendar

gdougas wrote:

I am running Catalina 10.15.7 on my late 2013 iMac 27".

I managed to sync successfully all info between my various Apple devices and iCloud.

Now, here is the problem:

Every time I start Calendar on the iMac, the Birthdays are gone, and I must go to Preferences and check them On again. Then, after exiting the app, and starting it again, they're gone...

This is not happening on my iPhone and iPad. Birthdays are always there.

Any ideas how to solve this problem?

Hi there,

Have you tried signing out of Calendar, and signing back in: Add or delete calendar accounts on Mac - Apple Support? Have you tried testing in Safe Mode: Start up your Mac in safe mode - Apple Support?

Cheers,

Jack