ProxyAutodetect.ps1

# Define proxy settings per machine and let autodetect enabled (~default user config per machine)
Configuration AutodetectProxy {
        Registry ProxyPerMachinePolicy
        {
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings'
            ValueName = 'ProxySettingsPerUser'
            Ensure = 'Present'
            ValueData = '0'
            ValueType = 'Dword'
            Force = $true
        }
        Registry ProxyPerMachineWinHttPSettings 
        {
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections'
            ValueName = 'WinHttPSettings'
            Ensure = 'Absent'
            Force = $true
        }
        Registry ProxyPerMachineDefaultConnectionSettings
        {
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections'
            ValueName = 'DefaultConnectionSettings'
            Ensure = 'Present'
            ValueType = 'Binary'
            ValueData = '4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
            Force = $true
        }
        Registry ProxyPerMachineSavedLegacySettings
        {
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections'
            ValueName = 'SavedLegacySettings'
            Ensure = 'Present'
            ValueType = 'Binary'
            ValueData = '4600000003000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
            Force = $true
        }
        Registry ProxyPerMachineProxyEnable
        {        
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings'
            ValueName = 'ProxyEnable'
            Ensure = 'Present'
            ValueData = '0'
            ValueType = 'Dword'
            Force = $true
        }
        Registry ProxyPerMachineProxyServer
        {        
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings'
            ValueName = 'ProxyServer'
            Ensure = 'Absent'
            Force = $true
        }
        Registry ProxyPerMachineProxyOverride
        {
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings'
            ValueName = 'ProxyOverride'
            Ensure = 'Absent'
            Force = $true
        }
        Registry ProxyPerMachineAutoConfigURL
        {
            Key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings'
            ValueName = 'AutoConfigURL'
            Ensure = 'Absent'
            Force = $true
        }
        Registry ProxyPerMachineLockAutoConfig
        {
            Key = 'HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Control Panel'
            ValueName = 'Autoconfig'
            Ensure = 'Present'
            ValueData = '1'
            ValueType = 'Dword'
            Force = $true
        }
        Registry ProxyPerMachineLockProxy
        {
            Key = 'HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Control Panel'
            ValueName = 'Proxy'
            Ensure = 'Present'
            ValueData = '1'
            ValueType = 'Dword'
            Force = $true
        }
}