Fix 'Threat Service Stopped' in Windows 10 Defender - Microsoft Teams File Locked After Upload Fix-Resolving BitLocker SSL Certificate Issues

Updated 2026-06-15 20:59:28developer-tools
Fix 'Threat Service Stopped' in Windows 10 Defender - Microsoft Teams File Locked After Upload Fix-Resolving BitLocker SSL Certificate Issues
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.