Fix Remote Desktop Gateway Timeout Error 504 - Microsoft Store Connection Refused Error Fix-Windows Security Proxy Error After Update: Quick Fixes

Updated 2026-06-18 02:59:35office-tools
Fix Remote Desktop Gateway Timeout Error 504 - Microsoft Store Connection Refused Error Fix-Windows Security Proxy Error After Update: Quick Fixes
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.