Open the calendar in Teams then click the down arrow beside the name:
Click ‘Go to website’ this will open it in SharePoint online, from there click on the Calendar tab
This will open a toolbar, click on the ‘Connect to Outlook’ button:
This will bring up the following message, click ‘Open Link’
Then you’ll get the following window, click Yes:
Then click on the Calendars button at the bottom of Outlook
You’ll see the calendar there:
