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Fix Nginx Upstream Connection Refused Socket Error - How to Fix Windows Update Error 0x80070002-Resolve NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode

2026-07-28 13:51:24
Fix Nginx Upstream Connection Refused Socket Error - How to Fix Windows Update Error 0x80070002-Resolve NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

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