Disable automatic Microsoft Teams online meetings in Outlook Calendar
Outlook may automatically add Teams Meetings or online meetings when sending an event invitation. You can disable this in the Outlook Settings.
Outlook for PC
Click the FILE menu and then go to Options.
Select the Calendar tab.
Under Calendar Options, uncheck the box next to Add online meetings to all meetings.
Outlook for Mac
Click the OUTLOOK menu and then go to Preferences.
Select the Calendar icon.
Under Calendar Options, uncheck the box next to Add online meetings to all meetings.
Outlook on the Web
Click the GEAR icon (top right) and then go to View all Outlook settings.
Select the Calendar tab.
Under Events and Invitations, uncheck the box next to Add online meetings to all meetings.
To turn off the automatic online meetings tenant-wide, run the Powershell command in the tenant.
Set-OrganizationConfig -OnlineMeetingsByDefaultEnabled $False