Fix Microsoft Teams Blank Screen on Mac: Step-by-Step - Resolve Teams Access Denied Issues-Fix Windows Defender Error 0x800106ba: Failed to Start

Updated 2026-06-14 07:32:07macos-help
Fix Microsoft Teams Blank Screen on Mac: Step-by-Step - Resolve Teams Access Denied Issues-Fix Windows Defender Error 0x800106ba: Failed to Start
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.