
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 Windows Security won't open, stays blank, or crashes on Windows 11, the problem is often a cor...

After a Windows update, you might see an activation error like "Windows failed to start" or "Acti...

If Windows Defender (Microsoft Defender Antivirus) isn't starting automatically when you boot you...

You see error 0x80070005 when trying to update Windows Defender. This usually means a permission ...

You try to install or update an app in the Microsoft Store on Windows 11, but get a 'permission d...