Exchange calendar listed twice I have one (just one) Exchange account configured:



But Calendar shows it twice:



In the Accounts tab of the Calendar preferences it also listed twice:



and if I try to remove one of them I am redirected to the Internet Accounts settings (where only one is listed).



Is there a fix or should I completely remove the Exchange account and add it again?
Following the discussion suggested in the comments I was able to find a partial solution:


In the Internet Accounts preferences (system-wide) uncheck the Calendars option from the Exchange account
In the preferences of the Calendars application choose the Accounts tab and disable the only visible account
In the system-wide Internet Accounts preferences re-enable the exchange account


The only drawback is that you will still see a disable Exchange account in your Calendars preferences.