Step 1
Open Windows 10 Calendar application.
How do I unsubscribe a calendar (delete a calendar subscription)?
Step 2
On the left you'll see a list of calendars.
If the list is closed, click to expand it.
Note that you may have more than one group, depending on how many accounts you have configured.
Step 3
A list opens. It shows the calendars under that account.
Move the pointer on top of the calendar you wish to remove.
Step 4
A appears. Click it to open a menu.
Step 5
On the menu that opens, click Remove calendar.
Step 6
On the confirmation dialog, click Continue.
Updated 8 Feb 2023