Fix Windows Defender Update Error 0x80070490 on Windows 11 - Windows Search DNS Error After Network Switch-Fix Microsoft Store Login Loop: Quick Guide

Updated 2026-06-14 03:09:46developer-tools
Fix Windows Defender Update Error 0x80070490 on Windows 11 - Windows Search DNS Error After Network Switch-Fix Microsoft Store Login Loop: Quick Guide
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.