This policy setting specifies if a user can change proxy settings.If you enable this policy setting the user will not be able to configure proxy settings.If you disable or do not configure this policy setting the user can configure proxy settings.
Policy path:
Windows Components\Internet Explorer
Scope:
Machine
Supported on:
At least Internet Explorer 5.0
Registry settings:
HKLM\Software\Policies\Microsoft\Internet Explorer\Control Panel!Proxy
Filename:
inetres.admx