Updated to 12.4, Calendars stopped working

[rickeames]

Once my update was done, I have blank calendars and when I go to view "calendars" at the bottom of the calendar view, they all have a red "I" next to them. Be they iCloud, gmail or exchange -- all dead on both iOS devices (iPad and iPhone) once I updated.

They work on my Macs, so what could be the problem?

 

[NoBoMac]

Red "i" is normal.

Are the check boxes at the left checked on?

Can try toggling off & on iCloud for the Apple calendars. And then repeat for Gmail, Exchange, etc. (Settings > Accounts > account). Might unstick if something stuck.

Have not seen this issue in a while, but in the old days, sometimes needed the nuclear option of completely signing out of iCloud and re-log in.