Calendar & iCloud "403" error message

oops, I meant the hint on page 1 from rpoland worked for me too saying:

"AppleCare had me quit calendar, remove the folder ~/library/Calendar and log off the cloud.

When I restarted all was well."

All works fine now, however I use desktop on iCloud Drive and document folder on iCloud Drive . Logging off and on to iCloud created A LOT of network traffic on my Mac as everything had to re-sync" again...

excatly the same problem,

i try to erase all ical stuff and re-sync, not solved anything....

no idea

I find a solution:

- go to sytem pref > icloud > unchecked calendar

- remove all this files :

home/libraryApplication Support/iCal

home/libraryCaches/iCal

home/libraryCaches/com.apple.iCal

home/libraryPreferences/com.apple.iCal.plist

home/libraryPreferences/com.apple.iCal.AlarmScheduler.plist

home/libraryPreferences/com.apple.iCal.helper.plist

- restart the Mac

- go back in the icloud pref and check calendar

enjoy !

Where do I go to to "remove all these files" as you recommend?

home/libraryApplication Support/iCal

home/libraryCaches/iCal

home/libraryCaches/com.apple.iCal

home/libraryPreferences/com.apple.iCal.plist

home/libraryPreferences/com.apple.iCal.AlarmScheduler.plist

home/libraryPreferences/com.apple.iCal.helper.plist

Any help would be appreciated. Receiving the same "403" error msg and unable to restart my computer unless I do a force quit.

Thanks

Go into your library > Application Support and find the folder "ical", move it to trash

do the same for files in the "caches" folder and "preferences" folder.

then you must restart before re-activate your icloud calendar.

Thank you!

My user library does not contain these folders. 10.9.1

not via

home/libraryPreferences or

home/library/Preferences

go to the finder, choose the menu "go" in the menu bar while pressing the "alt" key, choose library.

you can now go easily in "Application Support" folder "cache" and "Preferences" to delete the files.

I have been doing this since 1/22/14, many many times. In addition to reinstalling Calendar with Pacifist. And spent hours with AppleCare, 2nd level and Senior techs.

I hate spending $50 to goto BusyCal knowing that Apple will eventually fix this and I will want to come back.

I too don't have these folders. Does anyone have a remedy. Ical has crashed a few times and clearly there is a solution right?

AppleCare had me quit calendar, remove the folder ~/library/Calendar and log off the cloud.

When I restarted all was well.

Thanks rpoland, this worked for me. I used stef-j's advice to; "go to the finder, choose the menu "go" in the menu bar while pressing the "alt" key, choose Library."

You can now drag the "Calendars" folder to the trash.

This is awesome! and so simple, thank you

I find no such folder 'iCal' under Library > Application Support. I have OS X 10.9.2

Where else would 'iCal' be located?

I also did what thorpey0111 suggested and lost many of the Calendar appointments.