Fix Windows Update 504 Gateway Timeout Error - Fix Chrome Not Opening After Windows 10 Update-Windows Update Authentication Failed: Group Policy Fix

Updated 2026-06-18 09:26:16backup-recovery
Fix Windows Update 504 Gateway Timeout Error - Fix Chrome Not Opening After Windows 10 Update-Windows Update Authentication Failed: Group Policy Fix
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.