zhizhu
Home / browser-issues / Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus - Postman SSL Certificate Verification Failed: How to Fix-Troubleshoot Nginx Permission Denied in 5 Steps

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus - Postman SSL Certificate Verification Failed: How to Fix-Troubleshoot Nginx Permission Denied in 5 Steps

2026-06-13 12:14:20
Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus - Postman SSL Certificate Verification Failed: How to Fix-Troubleshoot Nginx Permission Denied in 5 Steps

Result check

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