How to Fix Windows Defender Scanning Taking Too Long - How to Fix Go Proxy Host Lookup Failure-Windows Security Won't Open Troubleshooting

Updated 2026-06-18 22:41:21cloud-software
How to Fix Windows Defender Scanning Taking Too Long - How to Fix Go Proxy Host Lookup Failure-Windows Security Won't Open Troubleshooting
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.