Fix Windows Defender DNS Error 0x800704cf - Resolve Windows Update 0x800f0922-Jupyter Notebook Token Login Failed After Upgrade

Updated 2026-06-13 14:29:02windows-fixes
Fix Windows Defender DNS Error 0x800704cf - Resolve Windows Update 0x800f0922-Jupyter Notebook Token Login Failed After Upgrade
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.