As always, the best defense is to not use Windows. The second best defense seems to be to use Windows Enterprise where you can manually disable telemetry in an official way. The third best is to try blocking it by changing settings, registry keys, and modifying your firewalls (outside of Windows, because Windows firewall will ignore filters that block Microsoft Telemetry IPs) and also consider that it all gets switched back on with every major Windows Update.

Toute les 30 min par défaut, et si tout configuré, ça sort quand même, sachant que, à chaque MAJ, il faut recommencer.

Traduction de Framasoft