Calendar pop-up error 400 - what is this and why am I getting this error message all the time - only on my Macbook and not my Ipad or Iphone?
[Re-Titled by Moderator]
Original Title: Calendar error 400
MacBook Air 13″, macOS 12.7
The CalDAV access is most likely reporting a 400 Bad Request error.
If you have any subscribed calendars, find and remove any unrecognized calendars.
if you don’t have any of those subscribed calendars, and there are no other indications which calendar is encountering this 400 error, use the Calendar Accounts setting to temporarily disable one of your calendars, wait, and see if the messages stop. If the 400 error messages continue, re-enable and selectively disable the next.
How do I fix Calendar pop-up error 400 on Mac?
