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Home / macos-help / How to Enable Windows Defender Module Using PowerShell - How to Fix Outlook Connection Refused by Firewall-Fix PowerShell 504 Gateway Timeout via Proxy Settings

How to Enable Windows Defender Module Using PowerShell - How to Fix Outlook Connection Refused by Firewall-Fix PowerShell 504 Gateway Timeout via Proxy Settings

Updated 2026-06-14 00:31:41macos-help
How to Enable Windows Defender Module Using PowerShell - How to Fix Outlook Connection Refused by Firewall-Fix PowerShell 504 Gateway Timeout via Proxy Settings
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.

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