Fix Nginx 502 Bad Gateway with Docker Environment Variables - Why Firefox Fails Only on WiFi and How to Solve It-Fix Wi-Fi No Internet on Windows 11 Without Restarting Router

Updated 2026-07-28 17:34:01browser-issues

Fix Nginx 502 Bad Gateway with Docker Environment Variables - Why Firefox Fails Only on WiFi and How to Solve It-Fix Wi-Fi No Internet on Windows 11 Without Restarting Router

Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

Restart the affected app after changing permissions or configuration files.
Test the same workflow in a clean browser profile or a temporary user account.
Compare the result on another network if the error may be connection related.