Fix Windows Security DNS Error Not Working - Microsoft Teams 504 Gateway Timeout Troubleshooting-Troubleshooting Docker Registry Authentication Errors

Updated 2026-06-14 05:49:16backup-recovery
Fix Windows Security DNS Error Not Working - Microsoft Teams 504 Gateway Timeout Troubleshooting-Troubleshooting Docker Registry Authentication Errors
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.