Originally Posted by
Eeshwari3
To solve this problem you have to first delete the calendars from your system which you have shared. After deleting the shared calendar you have to sign to the account from where calendar was shared. Now after that you have to stop sharing the calendar from there. Now you have to share calendar again and then you will not get iCal 403 Server Error again. Basically this problem occurs due to permission issue and by deleting the shared calendar from the system we can resolve it. I hope you will find this information helpful.
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