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Fix Microsoft Teams Grey Screen After Update - Disable Microsoft Defender via Group Policy: Step-by-Step-How to Use Windows Security Backup Tool

Updated 2026-06-14 14:37:47security-tools
Fix Microsoft Teams Grey Screen After Update - Disable Microsoft Defender via Group Policy: Step-by-Step-How to Use Windows Security Backup Tool
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.

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