Fix Outlook 502 Bad Gateway Error from Proxy Settings - How to Repair Windows Defender When It Won't Scan and Uses High CPU-Fix Slow Command Execution in Command Prompt

Updated 2026-06-14 14:46:04office-tools
Fix Outlook 502 Bad Gateway Error from Proxy Settings - How to Repair Windows Defender When It Won't Scan and Uses High CPU-Fix Slow Command Execution in Command Prompt
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.