zhizhu
Home / developer-tools / Fix 'Windows Defender Firewall Has Blocked' Error - How to Resolve Connection Refused in Offline Windows Activation-Visual Studio Installer Stuck on Windows 11 - Troubleshooting Guide

Fix 'Windows Defender Firewall Has Blocked' Error - How to Resolve Connection Refused in Offline Windows Activation-Visual Studio Installer Stuck on Windows 11 - Troubleshooting Guide

Updated 2026-06-13 20:24:57developer-tools
Fix 'Windows Defender Firewall Has Blocked' Error - How to Resolve Connection Refused in Offline Windows Activation-Visual Studio Installer Stuck on Windows 11 - Troubleshooting Guide
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.