Fix Windows Security Not Starting Automatically After Boot - How to Prevent systemd Service from Restarting in a Loop-Windows 11 Defender Won't Open: Troubleshooting Guide

Updated 2026-06-14 03:09:06browser-issues
Fix Windows Security Not Starting Automatically After Boot - How to Prevent systemd Service from Restarting in a Loop-Windows 11 Defender Won't Open: Troubleshooting Guide
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.