Mac Calendar "Server responded with an error" message

I think it has something to do with way apple communicates with google on more than just the mac. I'm now having the problem where my ipad calendar is not syncing with google calendar. I'm not getting an error message like on the mac, but it isn't syncing.

I switched to fantastical on the mac because I need a calendar that works and right now that is working perfectly and instantly, but the ipad hasn't been able to sync for a while.

I think this started without any updates from apple, so google probably changed the way their server works in some way.

Maybe google is trying to get back at apple for all the privacy fights they have been having.

Same problem as everyone else. Strange that the error message is always accompanied by a calendar icon showing "July 17". I really don't care who's responsible for this - Apple or Google - I just urgently need a working calendar app. Can someone please post a method for backing up my Google calendars and transferring them to Yahoo calendars (which is working) or Apple's own, whatever that is.

Sorry if this inquiry strikes this community as primitive but I'm just a non-tech user trying to get work done on my Mac. What I really don't understand is why both Apple and Google aren't upfront about software glitches; we all know they're going to happen occasionally - just be honest and keep us updated!

I think the user who posted about the times is right - mine seems to work from 9pm NZT to 9am ... then breaks again. Maybe a google server is being taken down for maintenance or something completely random!

pundit761, This happened to me (blank calendar when rebuilding) when I deleted the 3 cache files but not the plist file in Preferences. But it didn't matter, a few hours later after deleting all 4 files and rebuilding the problem re-emerged so pointless exercise to rebuild the calendar...

Certainly in Japan it seems to start working at 5pm local time. Not sure what time it breaks but in the morning it is broken again.

done delete and rebuild but it just goes bad again - IT IS TIME BOUND FOR SURE.....

Just an update for all. After testing on my MBP (x2), iPhone, and iPad...it was evening EST timezone. I left it "as is". I did not remove/add calendars or clear caches, etc. I was back on my Macs this morning and no server error messages. Everything was working normally.

I will see how it behaves tonight to see if it is a time of day thing.

I tried the David Drahos method ... no dice yet. My Notes and Contacts repopulated nicely, but nothing from GCal is appearing on my iCal. Does it take a very long time? My account is set to refresh every minute and I've tried a manual refresh several times. Nothing.

This is driving me crazy. I am having the problem for about a week. Have tried everything, adding accounts, deleting accounts, etc. it looks like the problem is not happening with the iPhone. I am using Big Sur, have done all updates and still the problem persists.

I think it now replicable - Starts working at around 5pm JST and stops working around 11am JST. Cant be sure that there wasn't a period of non operation during the night - but at least it doesn't seem to work at all 11am to 5pm here.

When this started, it wasn't so clear cut as this in terms of timing but seems consistent now. Will need to check again today.

Maybe this was due top propagation of some kind of update

I am having exact same issue, i have my two google account calendars connected, and it's still showing me:The server responded with an error.

And i have to do the "enable this account" like ten times...

It's very frustrating, even when i can loose event in calendar. It's happening since big sur.

I confirm that this works all of a sudden after midnight California time. It was driving me crazy. I'm on High Sierra and my events that I had entered in Apple Calendar this afternoon on my Mac did not sync to my Google Calendar. But now, all of a sudden it works.

Adding to the chorus that for the last week at least at 3:30-4:00 pm Pacific Time that Calendar reports no access to the server error to two Google accounts and on two machines. In the morning, all is fine. Have done all the accounts remove/readd, clear cache etc. Works fine on iOS same accounts

This is with an M1 MBP Big Sur and an Intel MBAir Big Sur.

Not trying any more suggestions...

Yes, same here! I noticed for the first time last night that the issue seems to have migrated to iOS. Had exclamation mark and sync issues. Seems resolved as of this morning, but will check again this evening to see if syncing issue moves on a cycle like it does on my Mac

I too found David Drahos' 11-step proposed solution to work. Thank you! (RE: Apple calendar suddenly not syncing with Google Calendar issue.) I had tried every other suggested solution. None worked for more than about 8 hours. David's seems to have REALLY fixed this issue. As a side-note, it seems to most people who have commented -- including me -- that this issue was created by a recent Big Sur update. Apples's posture on this issue is that it's not their problem, and we should contact Google. If it's really true that a Big Sur update caused the problem, it's more than offensive that Apple would feel no responsibility to fix the issue. Three of their support people gave me this answer, in so many words. Yet, NONE of the 3 were familiar with what is clearly a wide-spread problem. Thanks again to David for a solution that appears to be the fix.

I'm no longer -- or not yet -- having the issue, thanks to the 11-point solution posted by David Drahos. I appreciate your suggestion, but the solution is Apple's software changes that impacted the ability of mac's calendar to sync with the Google server. This, despite Apples insistence that it's an issue that Google has to fix. Not so, obviously, since David Drahos' solution corrected the problem.