Microsoft Store Sync Not Working: Step-by-Step Fix - BitLocker Proxy Error Troubleshooting Guide-Authentication Failed Error in Windows Defender Real-Time Protection

Updated 2026-06-15 18:47:43windows-fixes
Microsoft Store Sync Not Working: Step-by-Step Fix - BitLocker Proxy Error Troubleshooting Guide-Authentication Failed Error in Windows Defender Real-Time Protection
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.