
Setup Windows Security to Fix 502 Bad Gateway Error
If you're seeing a 502 Bad Gateway error while running a local web server on Windows, the problem...

If you're seeing a 502 Bad Gateway error while running a local web server on Windows, the problem...

You try to activate Windows, but instead get an error message saying the activation configuration...

You click to open Windows Defender Security Center and see a 404 page, or the Settings app shows ...

When you try to activate Windows using the command line—for example, running slmgr /ato

If you're seeing authentication errors, profile loading failures, or unexpected sign-out prompts ...

If you see errors like 'This app can't open' or 'Try that again – something happened on our end' ...