Mac Calendar "Server responded with an error" message

Same thing is happening to me. Its extremely frustrating - I've been using google calendar on iCal for years and now suddenly this. It started about 2 weeks ago. I use iCal to plan all our jobs for months ahead and to have this suddenly happen is annoying and un-necessary. I tried the previous posters fix, which worked for about 18 hours before I got this message again.

• macOS Catalina 10.15.7
• iMac (Retina 5K, 27-inch, 2020)
• Processor 3.3GHz 6-Core Intel Core i5
• Memory 32GB 2667 MHz DDR4
• Graphics AMD Radeon Pro 5300 4 GB

It's just my MacBook Air (M1, 2020) macOS 11.2.1 (20D74). The iPhone X and iPad are fine. I'm using GMAIL (4 accounts) and they're all dead as far as iCal is concerned. I deleted them all, shutdown and restarted, re-installed etc etc - still nothing.

UPDATE 2

Eliminating accounts Google accounts, flushing caches, force quitting, and restarting did nothing.

After a few minutes of having a blank list, back to the Error notification.

Using Calendar for the Mac

MacBook Pro (16-inch, 2019)

MacOS Big Sur 11.2.1 (20D74)

Hi David Drahos,

thanks for posting what worked for you.

I followed this method exactly but unfortunately, it didn't work for me. I am on Catalina 10.15.7 and it was occurring on high Sierra & Mojave ( I have been updating, hoping that would fix it)

I am having this issue on multiple computers & on different OS and is happening with more than one google account.

The majority of my calendars are in iCloud but I have some which have to be Google.

I really hope Apple fixes this quick as it is bad news for me and I am sure many, many others.

Really really strange but the issue is resolved and it's now working OK.

But I remember it was working OK yesterday and I'm afraid the issue is resumed when I wake up tomorrow...

macOS 11.2.1

MacBookPro13,2

FYI, it's now 2100 on February 24 in Japan, which is 0400 in Cupertino.

lol the definition of someone who shouldn't have a job in today's economy. Horrible response and horrible customer service. We can only hope no one employs this person for anything important out there.

Once again it worked for 12 hours or so when I deleted my caches and reloaded calendar (losing all my time zone information again, arg). Then around Feb 24 5pm California time, it stopped working again. Big Sur 11.2.1. MacBook Pro

This is interesting I have the same issue.... just noticed yesterday that at 5pm (JST) UTC + 9 - it started working correctly - bit by next days broken again.

I have followed all the cache removal/plist trashing steps and still have the issue which seems to be time bound

I'm in Japan too and I use the multi time zone feature on appointments. Turning that feature off doesn't fix it tho, but the feature is removed when I rebuild the calendar. I haven't tried rebuilding the calendar and leaving that feature off. Has anyone tried that?

Same problem. Started last weekend. 2-22 or so. Imac with Big Sur and MacBook Pro with High Sierra. Trouble shooting tipsdid not help. Apple is sanitizing its "ecosystem" of all things not paid to them. Got brief respite, 12 hours or so, by rebooting modem and router.

It's interesting that you noted the problem occurs around 6:00 pm PST. That's 1:00 pm here on the east coast of Australia, and that's about the time I've noticed this problem for each of the last three days. It persists until I go to bed but is resolved next morning.

Great to hear working (or partially working) for some as it gives me hope!

Still not working for me, I see the Google Account in the list but no Calendars showing underneath. I did the cache clear steps so I don't have the ! warning but in fact cannot see any Google Calendar (see attached pic)

I also created a blank user to test with but just get the same thing.

I am in Australia AEST. .

Currently 2pm here so that is 8pm PST

I read DinJapan's post about it working at 5pm JST so going to check at 6pm my time (which will be 12am PST)

I've had the same issue since the last update. I happen to have two Gmail accounts with two separate Google calendars tied to them. Both, separate accounts, are giving the same error. I can't believe the only way to solve this issue is what David Drahos suggested. I give him credit for coming up with what looks like may be a permanent solution. But I'd hate to go thru all that and have it do the same a week or two down the line. Let alone the time it's going to take to do it.

This hasn't worked for me - The calendar shows up on the left sidebar, but it seems to get stuck and I dont get anything populated in the calendar itself.

Perhaps it is just re-building the cache? Its been a few hours but still no dice.

The calendars that work - all Microsoft. Should have never migrated to Google.

At least no error signal anymore.....

Same issue here. I already tried deleting the account and restarting my mac. It helped for a few days and then the issue just reappeared. I have this both on my Catalina and my Big Sur, so it isn't related to Big Sur