Microsoft Teams Step 1 Select the Calls tab to view your recent call log. Step 2 Find the number you wish to block and click to open the more options (...) menu. Select Block. Step 3 The number will now have BLOCKED next to it. To unblock, reopen the more options menu and select unblock. Step 4 To review all blocked callers, open the Teams more options (...) menu in the top right corner and select Settings. Step 5 In the Settings pop-up window, select Privacy, then Edit blocked contacts. Please note: you can also enable the Block calls with no caller ID setting, which should eliminate some spam calls. Step 6 This page allows you to review all the blocked numbers and unblock any that were done in error. Close the window or go Back to settings when finished.