Fix VS Code GitHub Authentication Failed Error - How to Fix IPv4 Settings in Windows 11 for WiFi-How to Fix ERR_NAME_NOT_RESOLVED via Router Settings

Updated 2026-07-28 06:18:29browser-issues
Fix VS Code GitHub Authentication Failed Error - How to Fix IPv4 Settings in Windows 11 for WiFi-How to Fix ERR_NAME_NOT_RESOLVED via Router Settings
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.