Define addresses to bypass proxy server
Supported on: At least Windows Server 2012, Windows 8 or Windows RT
Registry
HKLM
Software\Policies\Microsoft\Windows Defender Options
ProxyBypass text Description
This policy, if defined, will prevent antimalware from using the configured proxy server when communicating with the specified IP addresses. The address value should be entered as a valid URL. If you enable this setting, the proxy server will be bypassed for the specified addresses. If you disable or do not configure this setting, the proxy server will not be bypassed for the specified addresses.