demo page: https://demo.smartscreen.msft.net/ Microsoft Defender for Endpoint URL list for commercial customers: https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/production-deployment?view=o365-worldwide
Required endpoints for europe and world-worldwide
80 crl.microsoft.com 80 ctldl.windowsupdate.com 80 www.microsoft.com/pkiops/* 80 www.microsoft.com/pki/* 443 events.data.microsoft.com 443 x.cp.wd.microsoft.com 443 cdn.x.cp.wd.microsoft.com 443 officecdn-microsoft-com.akamaized.net 443 packages.microsoft.com 443 europe.x.cp.wd.microsoft.com 443 eu-v20.events.data.microsoft.com 443 winatp-gw-neu.microsoft.com 443 winatp-gw-weu.microsoft.com 443 winatp-gw-neu3.microsoft.com 443 winatp-gw-weu3.microsoft.com 443 automatedirstrprdneu.blob.core.windows.net 443 automatedirstrprdweu.blob.core.windows.net 443 automatedirstrprdneu3.blob.core.windows.net 443 automatedirstrprdweu3.blob.core.windows.net 443 usseu1northprod.blob.core.windows.net 443 wseu1northprod.blob.core.windows.net 443 usseu1westprod.blob.core.windows.net 443 wseu1westprod.blob.core.windows.net