Policy
Define addresses to bypass proxy server
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.
a3253fafcf8c ProxyBypass Registry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Windows Defender\ProxyBypass Policy notes
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.