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Blocklists - Microsoft - Microsoft Windows

www.msftncsi.com # Windows uses this to verify connectivity to Internet.

Windows often trys to connect to these domains:

tlu.dl.delivery.mp.microsoft.com - Used to download operating system patches, updates, and apps from Microsoft Store.
fe3cr.delivery.mp.microsoft.com - Used to download operating system patches, updates, and apps from Microsoft Store.
settings-win.data.microsoft.com - Used for Windows apps to dynamically update their configuration.
ctldl.windowsupdate.com - Certificate Trust List.
slscr.update.microsoft.com - Windows update.
client.wns.windows.com - Used for the Windows Push Notification Service (WNS).
dns.msftncsi.com - Used to check if Windows is online.
ris.api.iris.microsoft.com - Used to retrieve Windows Spotlight metadata that describes content.
cxcs.microsoft.net - Microsoft customer experience center.
cdn.onenote.net - Microsoft OneNote.
arc.msn.com - Windows Spotlight.

Windows Update

update.microsoft.com
update.microsoft.com.akadns.net 
download.windowsupdate.com
download.microsoft.com