I have googled the issue and found your article 'How to Fix: Windows 10 Black Border (Shrinking Screen)', but I don I get the welcome screen, click Next and then get the blank screen. Go into the credential manager in control panel. Select Programs, then click Uninstall Programs. I have googled the issue and found your article 'How to Fix: Windows 10 Black Border (Shrinking Screen)', but I don it only seems that google chrome is affected, internet explorer and windows explorer. Others on the video call see the same black screen. This is because screen sharing on macOS requires special permission. not opening or showing a white screen, continue. Let us know if you managed to fix your Microsoft Teams screen sharing problem. This practice will help Windows to initialize the camera device again.
