> > Did you test your "solution" against his setting?

> Yes, I have tested my answer on Windows XP, Windows 7, and Windows 10

To be clear, the OP is using Perl commands (!) like $child_pid = fork , that's the "setting" you have to test.

You just copied the whole documentation (~ 70 lines) for a Windows command named "taskkill", but not a bit of Perl code.

Now, if you say you were able to use taskkill to kill a $child_pid returned from a Perl ° fork without the problems the OP described, I (and others) would be very pleased to see that Perl code.

So please show us your test, no matter which version of Windows.

This would merit a lot of upvotes.

> why do you downvote my answer?

How do you want to know that I downvoted your answer?

°) please note the OP's use of the word "portably".