How to Fix Windows Defender 502 Bad Gateway Error - Fix Outlook 502 Bad Gateway Error from Antivirus Interference-Windows Update Error 0x80070057: Token Expired Fix

Updated 2026-06-14 18:00:29macos-help
How to Fix Windows Defender 502 Bad Gateway Error - Fix Outlook 502 Bad Gateway Error from Antivirus Interference-Windows Update Error 0x80070057: Token Expired Fix
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.