
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...

If you see 'security token expired' or 'permissions denied' when accessing files, folders, or net...

You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...

When PowerShell returns a 504 Gateway Timeout error, it means the web server acting as a gateway ...

When running Windows Update, you may see error 0x800f0831 with a message that a component is miss...

Windows Search not returning results or indexing slowly? The built-in Search and Indexing trouble...