afni.nimh.nih.gov

Hm, let's see. Are you installing Ubuntu 16.04 as your version of Linux on Windows10? And/or, what is the output of:

lsb_release -irc

?

Assuming it is 16.04, can you try re-copying+pasting the commands in step "a" here:
[afni.nimh.nih.gov]
?

Does that solve it? If not, what is the output of:

afni_system_check.py -check_all

?

--pt