Fix Windows Defender 504 Gateway Timeout Error - Fix Chrome Hanging on Checking for Updates-How to Solve PowerShell Version Incompatibility

Updated 2026-06-18 13:31:17security-tools
Fix Windows Defender 504 Gateway Timeout Error - Fix Chrome Hanging on Checking for Updates-How to Solve PowerShell Version Incompatibility
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.