Fix Windows Update 404 Not Found Error When Antivirus Interferes - How to Resolve WinSCP Publickey Authentication Failure-Troubleshooting Remote Desktop DNS Issues

Updated 2026-06-14 09:59:58windows-fixes
Fix Windows Update 404 Not Found Error When Antivirus Interferes - How to Resolve WinSCP Publickey Authentication Failure-Troubleshooting Remote Desktop DNS Issues
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.