
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 launch PowerShell 7, and the window shows “Loading PowerShell 7” indefinitely. The prompt nev...

You try to update Windows Defender or run a scan and get an error like "Permission denied"

If OneDrive sync stops working or shows errors like “This version of OneDrive is no longer suppor...

You open the VS Code integrated terminal, select PowerShell, and try to run a command that requir...

You open Task Manager and see Windows Security (the process is MsMpEng.exe) using 500 MB or more ...