> ver
Microsoft Windows [Version 10.0.15063]

$ uname -a
CYGWIN_NT-10.0 mew 2.8.1(0.310/5/3)  x86_64 Cygwin

=== Developer mode DISabled, non-elevated Administrators account

> echo > foo
> mklink bar foo
You do not have sufficient privilege to perform this operation.

$ export CYGWIN="winsymlinks:nativestrict"
$ touch foo
$ ln -s foo bar
ln: failed to create symbolic link 'bar': Operation not permitted

=== Developer mode ENabled, non-elevated Administrators account

$ export CYGWIN="winsymlinks:nativestrict"
$ touch foo
$ ln -s foo bar
$ rm bar

> echo > foo
> mklink bar foo
symbolic link created for bar <<===>> foo
> del bar

-- 
David Macek