Fix Firefox Secure Connection Failed Certificate Errors - Windows Defender Service Stuck Loading – How to Fix-Fix BitLocker Auto-Unlock Permission Denied Error

Updated 2026-06-18 11:01:37security-tools
Fix Firefox Secure Connection Failed Certificate Errors - Windows Defender Service Stuck Loading – How to Fix-Fix BitLocker Auto-Unlock Permission Denied Error
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.