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Fix Windows Defender SSL Certificate Sync Errors - Resolve ERR_SSL_PROTOCOL_ERROR on Windows 10-Windows Update Broke Task Scheduler: How to Fix

2026-06-13 20:08:47developer-tools
Fix Windows Defender SSL Certificate Sync Errors - Resolve ERR_SSL_PROTOCOL_ERROR on Windows 10-Windows Update Broke Task Scheduler: How to Fix

Final checklist

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