Fix Microsoft Store Sign-In Issues on Windows 11 - How to Fix Windows Security 404 Error When Opening-Troubleshoot OneDrive 502 Bad Gateway

Updated 2026-06-13 20:18:15windows-fixes
Fix Microsoft Store Sign-In Issues on Windows 11 - How to Fix Windows Security 404 Error When Opening-Troubleshoot OneDrive 502 Bad Gateway
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.