diff --git a/windows10-threadripper-pinning.xml b/windows10-threadripper-pinning.xml
index c7f8da2..83d3d5c 100644
--- a/windows10-threadripper-pinning.xml
+++ b/windows10-threadripper-pinning.xml
@@ -86,6 +86,7 @@
     <topology sockets='1' dies='1' cores='16' threads='2'/>
     <feature policy='disable' name='hypervisor'/>
     <feature policy='require' name='x2apic'/>
+    <feature policy='require' name='topoext'/>
   </cpu>
   <clock offset='localtime'>
     <timer name='rtc' tickpolicy='catchup'/>