Debugging problems with the network proxy (via: The Chromium Projects)

In this case, another tool didn’t obtain the right Proxy settings.

Chrome to the rescue as chrome://net-internals/#proxy shows you the system proxy settings:

When browsers are experiencing network problems, generally the first thing to test is your network proxy settings. Misconfigured settings, or misbehaving settings, can have a profound impact on your network traffic possibly resulting in pages not loading at all.

Main take aways: chrome://net-internals/#proxy

Since then, I created this small batch file:

reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" | findstr proxy

And this one to edit the settings:

"C:\Windows\system32\rundll32.exe" shell32.dll,Control_RunDLL inetcpl.cpl,,4

It will open the same Window that your Control Panel or Internet Explorer uses to manage connection and proxy settings.
From there click the “LAN Settings” button to edit the proxy configuration.

–jeroen

via: Debugging problems with the network proxy – The Chromium Projects.