Change Internet Explorer Connections Settings from Registry

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

Result : Greyed-Out, settings for Automatically detect settings & Use automatic configuration script cannot be changed

Objective : Checked / Unchecked Automatically detect settings

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings\
• Value Name : AutoDetect
• Value Type : DWORD

Value Data : 0

Result : unchecked

Value Data : 1

Result : checked

Objective : Enable / Disable Use automatic configuration script

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings
• Value Name : AutoConfigURL
• Value Type : REG_SZ

Value Data : <Config URL>

Result : Config URL configured

Objective : Grey-out / un-grey-out Option to use proxy server

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings
• Value Name : ProxyEnable
• Value Type : REG_DWORD

Value Data : 0

Result : option to use a proxy server for your LAN is un-checked, box to put proxy server and port disabled, Advanced box disabled, option to bypass prosxy server disabled

Value Data : 1

Result : option to use a proxy server for your LAN is checked, box to put proxy server and port enabled, Advanced box enabled, option to bypass prosxy server enabled

Objective : Set Proxy Server

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings
• Value Name : ProxyServer
• Value Type : REG_SZ

Value Data : ProxyName:port

Result :

1) proxy and port configured

2) Use the same proxy server for all protocols will be checked automatically, and all protocols will be using the same proxy and port number

Objective : Check / un-check Bypass Proxy Server for Local Addresses

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings
• Value Name : ProxyOverride
• Value Type : REG_SZ

Value Data : <local>

Result : Bypass Proxy Server for Local Addresses checked

Value Data :

Result : Bypass Proxy Server for Local Addresses unchecked

Objective : Set different proxies / ports to targeted protocols

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings
• Value Name : ProxyServer
• Value Type : REG_SZ

Value Data : http=httpproxy.co:10;https=httpsproxy.co:20;ftp=FtpProxy.co:30;socks=SocksProxy.co:40

Result : different proxies / ports set to targeted protocols. Use the same proxy server for all protocols option unchecked.

Objective : Set URLs for proxy exception

Location :

• Hive : HKCU
• Key : Software\Microsoft\Windows\CurrentVersion\Internet Settings
• Value Name : ProxyOverride
• Value Type : REG_SZ

Value Data : URL01;URL02;*.url03;URL04.*;*URL05.*

Result : URLs will be set at proxy exception