Follow these 3 steps:

1: kd> !process
PROCESS ffffe001675178c0
 SessionId: 2 Cid: 0aa8 Peb: 7ff6a0165000 ParentCid: 02cc
 // ...

1: kd> .kill ffffe001675178c0
You need to continue execution (press 'g' <enter>) 
for the kill attempt to occur.

1: kd> g

Done!