Okay, I seriously thought I already have this post uploaded in this blog, but it turned out I was wrong. I have kept this for a long time, and it helped me a numbers of times already so I reckon it will help others as well. IE Connections. There are a few settings we can configured in IE Connections Settings such as :  Automatically detect settings   Use automatic configuration script   Use a proxy server   Bypass proxy server for local addresses   Use different proxy servers for different protocols   Proxy server exception.     For this post, I will list registry keys positions for each setting. Objective : Grey-Out / Not-Grey-Out Automatic Configuration Location :  Hive : HKCU  Key : Software\Policies\Microsoft\Internet Explorer\Control Panel\  Value Name : AutoConfig  Value Type : DWORD      Value Data : 0   Result : Not-Greyed-Out, settings for Automatically detect settings & Use automatic configuration script can be changed.   Value Data : 1     Re...