PROBLEM
Some users have reported issues where unexpected contacts have shown up in their Teams contact lists. This happens when Teams pulls contacts from a user’s personal Outlook contacts when synchronized with the same Microsoft Office 365 account.
WORKAROUND
Unfortunately, there is no way to prevent this automatic synch between Teams and Outlook. However, there is a workaround to help users remove these personal contacts from their Outlook contacts, and in turn they will be removed from Teams.
STEP 1
On your Apple iPhone/iPad, navigate to Settings > Mail > Accounts. Select your Birdville email account then select Delete Account.
STEP 2
On your computer, login to your Microsoft 365 account.
Reference: Microsoft Office 365: Login
STEP 3
Open the Outlook app.
STEP 4
Click on the People button at the bottom of the list pane to access your Outlook contacts.
STEP 5
Under Your Contacts in the list pane, select the contact(s) you wish to delete.
STEP 6
Click the Delete button in the toolbar at the top.
STEP 6
The contact are now removed from your Outlook contacts and should be removed from your Teams contact list as well.
STEP 7
If not already, open the Teams app, sign out of Teams by selecting your profile icon at the top of the app, and then select sign out. Sign in to Teams. Your personal contacts should no longer be listed in Teams.
STEP 8