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Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Antivirus Interfering with Windows Security-Troubleshooting Windows Update 0x80070002

2026-07-28 06:35:07
Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Antivirus Interfering with Windows Security-Troubleshooting Windows Update 0x80070002

Result check

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

Next references

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