zhizhu
Home / browser-issues / WireGuard Handshake Not Completing: NAT Troubleshooting Guide - Fix Windows Security 504 Gateway Timeout During Windows Update-Fix Windows Security Invalid Configuration Error Code

WireGuard Handshake Not Completing: NAT Troubleshooting Guide - Fix Windows Security 504 Gateway Timeout During Windows Update-Fix Windows Security Invalid Configuration Error Code

2026-06-13 13:45:33
WireGuard Handshake Not Completing: NAT Troubleshooting Guide - Fix Windows Security 504 Gateway Timeout During Windows Update-Fix Windows Security Invalid Configuration Error Code

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.