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Nginx Upstream Connection Refused: Diagnosis and Fixes - Troubleshoot NET::ERR_CERT_AUTHORITY_INVALID in Chrome and Edge-Fix Windows Defender Real-Time Protection Not Starting

Updated 2026-07-28 13:12:22windows-fixes
Nginx Upstream Connection Refused: Diagnosis and Fixes - Troubleshoot NET::ERR_CERT_AUTHORITY_INVALID in Chrome and Edge-Fix Windows Defender Real-Time Protection Not Starting
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  • Match the tool to the workflow that fails most often, not only the feature list.
  • Keep export format, permissions, and automation limits in the final decision.

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