![]() We've asked Microsoft if there is any way to disable this additional communication or information about what its purpose is. We configured our test virtual machine to use an HTTP and HTTPS proxy (both as a user-level proxy and a system-wide proxy) so that we could more easily monitor its traffic, but Windows 10 seems to make requests to a content delivery network that bypass the proxy. AdvertisementĮnlarge / We have no idea what's going on here.Īnd finally, some traffic seems quite impenetrable. We disabled telemetry on our test machine using group policies. The exact nature of the information being sent isn't clear-it appears to be referencing telemetry settings-and again, it's not clear why any data is being sent at all. Windows 10 seems to transmit information to the server even when OneDrive is disabled and logins are using a local account that isn't connected to a Microsoft Account. This server seems to be used for OneDrive and some other Microsoft services. Windows 10 will periodically send data to a Microsoft server named. Other traffic looks a little more troublesome. While again the requests contain no identifying information, it's not clear why they're occurring at all, given that they have no corresponding tile. For example, even with no Live tiles pinned to Start (and hence no obvious need to poll for new tile data), Windows 10 seems to download new tile info from MSN's network from time to time, using unencrypted HTTP to do so. Some of the traffic looks harmless but feels like it shouldn't be happening. If you want to turn even these off there is a way to do so, but the privacy impact is minimal. ![]() These requests are very bare, with no machine IDs or other data sent. On connecting to a new network, Windows machines try to request two URLs (and /ncsi.txt, the former over IPv4, the latter over IPv6) to ascertain whether a given network is routed to the Internet and if there is a captive portal in the way (NCSI stands for "Network Connection Status Indicator"). Some of the traffic is obviously harmless. Enlarge / Shown in the Fiddler debugging Web proxy, the request that the Start menu makes every time you start typing into it or boot your machine.
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