Fix Windows Defender Real-Time Protection Authentication Failed - BitLocker Network Unlock Group Policy Setup Guide-Fix DNS Probe Finished NXDOMAIN in Chrome (IPv4/IPv6)

Updated 2026-06-19 09:23:40cloud-software
Fix Windows Defender Real-Time Protection Authentication Failed - BitLocker Network Unlock Group Policy Setup Guide-Fix DNS Probe Finished NXDOMAIN in Chrome (IPv4/IPv6)
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.