Fix Windows Defender Connection Refused via Group Policy - How to Turn Off Windows Defender Real-Time Protection with Group Policy-Fix Visual Studio Installer Not Working After Windows Update

Updated 2026-06-13 14:28:44developer-tools
Fix Windows Defender Connection Refused via Group Policy - How to Turn Off Windows Defender Real-Time Protection with Group Policy-Fix Visual Studio Installer Not Working After Windows Update
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.