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Fix Microsoft Teams Slow Startup by Disabling Hardware Acceleration - Fix Windows Defender Login Loop on Windows 10-Resolve Windows Defender Authentication Failure from Group Policy

Updated 2026-06-14 01:42:45browser-issues
Fix Microsoft Teams Slow Startup by Disabling Hardware Acceleration - Fix Windows Defender Login Loop on Windows 10-Resolve Windows Defender Authentication Failure from Group Policy
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.