Update: Got OP's problem backwards. My reply is irrelevant but I'm leaving it lest some future reader actually be seeking info re 'doze kill.

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Which "Windows?"

I believe you'll find that kill -- probably an alias for the commandlet Stop-Process -- is -- generally -- NOT native to older w32 OSen and, when extant, a functional counterpart may have another name.

I also believe you may find a Posix kill in a Cygwin install, but the really short answer is "You'll have to research the documentation for the 'Windows' in question."