Fix Windows Defender Error 502 Bad Gateway - Fix Windows Search 502 Bad Gateway Due to Proxy Settings-Windows Search Access Denied Fix

Updated 2026-06-18 02:24:32browser-issues
Fix Windows Defender Error 502 Bad Gateway - Fix Windows Search 502 Bad Gateway Due to Proxy Settings-Windows Search Access Denied 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.