Note: You can only block a phone number and not a Teams contact.

1. Open the Microsoft Teams Client.

2. On the left side, click Calls > History.

3. Find the call entry for the number you'd like to block.

4. On the right side, near the Date, locate the three dots. Click the three dots then select Block.

**** Note: You can only block callers if they are in your call history.

 5. Once blocked, you will see a box next to the number saying �Blocked�.