Changing Proxy server settings through the registry
If you are stuck with proxy settings that you are unable to change through ‘Internet Settings’, you can change them in the registry.
The Proxy settings are a user specific setting, therefore are stored for the current user.
The registry location is ‘HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings‘ .
Here you can either turn off the proxy (ProxyEnable = zero) or change the BypassProxy option.
Microsoft Windows Registry Guide, Second Edition (Pro One Offs)
