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Home / cloud-software / Fix 'Windows Security App Not Installed' on Windows 10 - How to Fix Git Permission Denied (publickey) Error-ERR_TUNNEL_CONNECTION_FAILED Troubleshooting Guide

Fix 'Windows Security App Not Installed' on Windows 10 - How to Fix Git Permission Denied (publickey) Error-ERR_TUNNEL_CONNECTION_FAILED Troubleshooting Guide

2026-06-13 15:27:47cloud-software
Fix 'Windows Security App Not Installed' on Windows 10 - How to Fix Git Permission Denied (publickey) Error-ERR_TUNNEL_CONNECTION_FAILED Troubleshooting Guide

Final checklist

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