
Windows Defender 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...

If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...

You open Windows Security and see 'Threat service has stopped. Restart it now.' At the same time,...

You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...

You open PowerShell, type a Windows Update command like Get-WUInstall or wuauc...

You open Windows Search and get an error about a token being expired or permissions being invalid...

Windows Update error 0x80070005 typically means the update process doesn't have the necessary per...