Mac Calendar "Server responded with an error" message

Hello.

I spent 3 hours with mac support this week about this issue. I was finally transferred to a top tier specialist. Funny enough, two of the top tier specialists had the exact same problem. We tried everything, and then after many hours, the top tier specialist contacted the top tier tech department. This has something to do with google servers not communicating with apple. So nothing will work from our (consumer) end. This issue is all on them.

I had the same question as you one week ago, but I am sure that mac occurred this question before the Big Sur update.

But now I can sync my google calendar with my mac successfully!! Not sure if you are in the same situation, maybe you can try.

Here are some tips I did:

1. Open your Google Calendar on the web.
2. [Setting Menu] > [Settings]
3. Click the calendar you want to sync on mac on the left side section, below the title "Settings for my calendars".
4. [Access permissions] > [Make available to public]
5. Refresh or reopen your mac calendar.

If these still can't help it, keep following below...

1. Open Mac Calendar
2. [Perference] > [Account]
3. Change [Refresh Calendar] to [Manual]
4. Refresh or reopen your mac calendar.

If you are sure that it syncs successfully, you can change [Access permissions] to the original setting.

Hope you guys can solve the problem like me.

Hi jeremy_v,

I'm having this same issue. I just purchased a new MacBook Air (M1 chip) and used Migration Assistant to transfer over from my old Air a little over a week ago. I'm seeing the same error message for my Google Calendar while inside the Calendar app. This isn't happening to any of my other e-mail accounts. I called Apple Tech Support, and they did not have a solution. I have removed and re-added the Google/Gmail account a few times now through System Preferences. This does not solve the problem; once the Google calendar populates and appears to be working again, the error reappears after some time. This does affect functionality; I added an event to the Google calendar on my Mac, yet the event won't sync/show on my iPhone. My iPhone also does show this error which leads me to conclude that this malfunction could be a glitch with the latest macOS 11.2.1 software as another commenter on this thread has suggested.

I did review your help articles, but I can't find the solution for this problem. Can you help escalate this, so it can be fixed for many of your customers? I'd love to use my new Apple device as intended!

So I have been having this same issue since the last 2 weeks. I did a little playing around and here is what I found out:

1) For me the Apple Calendar "reads" all the events from both my google accounts, but when I add a new event using Apple Calendars, it doesn't appear on my Google Calendars. So I think it reads data from google calendars fine, but cannot write.

2) The issue doesn't happen on my iPhone which has the same calendars set up via iCloud.

So I don't think it is something that Apple has deliberately changed to discourage Apple users using Google Calendars like some have suggested, but more like something broken with Big Sur update.

PS: Does anyone also note Wi-fi issues after the Big Sur update. When I switch between my office and home wi-fi, I consistently face issues connecting. Sometimes a restart helps, but there is definitely some issues connecting to Wi-Fi networks.

for me works deleting cache library/calendars . It solves issue for a while, but it comes back.

Macbook air , Big Sur

The suggestion by the Community Specialist is useless. It doesn't address this very specific problem we all have.

Yesterday, I called AppleCare. Spoke to Luis (online chat). He sent me instructions to:

1. Refresh the NVRAM
2. Start in Safe Mode
3. Delete those cache files and cookie files (which I think are mentioned in this article and are definitely in other articles which I found online).
4. I also removed the gmail account, re-loaded it. And, I toggled calendars on/off several times.

Guess What? (Play TPIR losing horn here)

I'm not sure if this problem is with Apple or Google or both. But, obviously they (i.e. their systems) don't want to play nice with each other.

I hope that Apple and Google both jump on his quickly. I'm going to redo my calendars using my iCloud account (which is, I'm sure, exactly what Apple wants me to do)...but I have no choice. Price for being a fan-boy I guess

Sorry if this offends, I just think it is best to tell it like it is.

Has anyone gotten through to Apple on this? I had a similar issue in August of 2019 where GCal events wouldn't load at all in the native Mac calendar app (see this thread for a description). At the time, I submitted service requests to Apple *and* Google, and I want to say the issue was resolved in a matter of a couple of days. Here, it's been two+ weeks and I'm losing my mind. Issue is unique to my Mac -- I've had zero problems on my iPhone. I've cleared cached, disabled and enabled Gmail account, updated Mac OS, restarted my computer, etc. all to no avail. Like other people have noted, the sync issues seem to be running on some kind of cycle. I'm in the central time zone of the US, and by late evening each day, the Calendar app starts having issues connecting to the server. However, when I use the app the next morning, the issue goes away -- very weird. I like the native calendar app for Macs, but I can't hold out much longer on a fix to this -- how are you supposed to use the app if it can't reliably sync with Google's server?!

Google developers are taking a look at this issue:

• https://piunikaweb.com/2021/03/01/google-calendar-users-reporting-intermittent-sync-issues-across-several-macos-versions/
• https://support.google.com/calendar/thread/98473879?hl=en&msgid=99455779

Please submit the error here:

https://feedbackassistant.apple.com

That is the only way to get this noticed and fixed.

Please file the big with google and tell them the times it goes out and your time zone. https://support.google.com/calendar/answer/6110973?co=GENIE.Platform%3DDesktop&hl=en

This is happening to me too. I've force quit the CalendarAgent deleted all my accounts, cleared the calendar cache and preferences, and restarted. Searching for answers it looks like this menu used to have an option to revert a change to server but that button is gone. I wonder if this is caused by the recent MacOS 11.2.1 (20D74) update I did.

Is weird, I found out this issue happens from time to time.

I found the following pattern for me, during the morning (UTC -5 time), until 19:00 hours it works well, afterwards at some point is broken and stop working. All my Gmail accounts (I have 4 added in the calendar) are affected and do not work until next day when I turn on the computer by 9:00 or so and starts working again.

This happened already for me 3 days in a row.

Same here. It's a very big deal for my business right now to not have my Calendars working. At least we can figure it out together. For now I have downloaded the OneCalendar app which seems to import all my various google calendars without problem. This leads me to believe it's 100% an Apple issue and not Google. At least I can see al my cal's in one place with the new app but it sucks compared to the regular app. Can't wait to get a real fix for this.

looked at calendar messages in the error log via console and see a http 403 forbidden error coming back from google.. no further explanation included in that 403 response either.. just rudely disconnects