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Fixing Microsoft Teams Connection Timeout and Sync Issues - Windows Defender Service Not Starting: Fixes and Checks-Resolve Cloudflare 525 SSL Handshake Failed

2026-06-17 06:46:09developer-tools
Fixing Microsoft Teams Connection Timeout and Sync Issues - Windows Defender Service Not Starting: Fixes and Checks-Resolve Cloudflare 525 SSL Handshake Failed

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.