diff --git a/data/StevenBlack/hosts b/data/StevenBlack/hosts
index 353ecc977..d029ef793 100644
--- a/data/StevenBlack/hosts
+++ b/data/StevenBlack/hosts
@@ -962,4 +962,14 @@
 0.0.0.0 www.myfreecams.com
 0.0.0.0 icloud.com-locations.in
 0.0.0.0 cradver.livejasmin.com
+
+
+# See Issue #844 – Windows telemetry servers – https://github.com/StevenBlack/hosts/issues/844
+alpha.telemetry.microsft.com
+eu.vortex-win.data.microsft.com
+oca.telemetry.microsft.com
+us.vortex-win.data.microsft.com
+v10-win.vortex.data.microsft.com.akadns.net
+v10.vortex-win.data.microsft.com
+
 #=====================================