Delete Subscribed Calendars from Google Calendar
It is important to remove any subscribed calendars that have been added to the Google Calendar before the migration.
Access Your Calendar
To access your calendar, open Gmail and left click on the “Google Apps” icon circled below.


In the list that appears, left click on the “Calendar” icon (you may have to scroll to find it).

In the Navigation Pane, my calendars appear under “My calendars” and “Other calendars”. Some are the default calendars and others are calendars that have been subscribed to. All subscribed calendars must be removed then subscribed to again after the migration in Microsoft calendar.
Difference between Default Calendars and Subscribed Calendars
When you hover over or rest your mouse on a default calendar, such as “Birthdays”, it appears like the example below.

Only the Options menu (the three dots) appears on the line.
When you hover over or rest your mouse on a subscribed calendar, such as “Test”, it appears like the example below.

Notice on the subscribed calendar there is an X along with the Options menu. To remove the calendar, click on the X.
The confirmation window appears. Click on “Remove calendar”.

When you are finished, your calendars pane it should look like this.
