iCloud Server "400" error

Every time I open or add anything to my Calendar on MacBook Pro 2016 I get this error window that takes 3 clicks to get rid ot... "The request for account “iCloud” failed. The server responded with “400” to operation CalDAVUpdateShareesQueuableOperation".

Software updated to macOS Monterey Version 12.7.1

Im not a computer wizard so need simple instructions (if any) to fix this issue as googling the answer has come to nothing helpful that worked.

cheers Kim

MacBook Pro 15″, macOS 12.7

Posted on Dec 6, 2023 8:48 PM

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iCloud Server "400" error

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