Windows Defender Service Not Working in Windows 11: Fixes - Fix Docker Pull Denied Error 403: Practical Steps-Windows Terminal Localhost Connection Refused Fix

Updated 2026-06-19 05:23:55windows-fixes

Windows Defender Service Not Working in Windows 11: Fixes - Fix Docker Pull Denied Error 403: Practical Steps-Windows Terminal Localhost Connection Refused 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.