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Caution sign on Mac OS Calendar app

Every once in a while I notice this on my iMac (OS 12.4) Calendar. What does it mean and what I do I about it, if anything? (Clicking on the exclamation point does nothing, btw.)


iMac 27″, macOS 12.4

Posted on Jun 21, 2022 11:28 AM

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Question marked as Top-ranking reply

Posted on Jun 22, 2022 10:51 AM

Hi BPpark,


We'd love to assist you with the calendar on your Mac. The icon you are showing for your Verizon/AOL calendar is an error that the specific calendar cannot connect to the server. This error can be caused by your internet connection or the actual server and can sometimes resolves itself. If it does not, then we'd recommend deleting the calendar and adding it back using the steps here: Add or delete calendars on Mac


Best regards


3 replies
Question marked as Top-ranking reply

Jun 22, 2022 10:51 AM in response to BPpark

Hi BPpark,


We'd love to assist you with the calendar on your Mac. The icon you are showing for your Verizon/AOL calendar is an error that the specific calendar cannot connect to the server. This error can be caused by your internet connection or the actual server and can sometimes resolves itself. If it does not, then we'd recommend deleting the calendar and adding it back using the steps here: Add or delete calendars on Mac


Best regards


Jun 23, 2022 11:56 AM in response to K_Wall44

Thanks. It turns out that the calendar in question isn't one that could be deleted in the manner described by the link. But after poking around I realized it was a setting in System Preferences/Accounts. Evidently, when converting my legacy Verizon e-mail account to AOL servers a while ago, I must have absentmindedly clicked (or forgotten to unclick) "Calendars" on the AOL tab, even though I don't use the Verizon/AOL Calendar function. Unclicking it removed that item from my Mac's Calendar app, where it was just taking up space and producing the occasional error message.

Caution sign on Mac OS Calendar app

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