Vagrant shared folder and symbolik links under Windows 10

I have a vagrant box with Linux inside under Windows 10 (VirtualBox 5.1.4, Vagrant 1.8.5). Inside the vagrant box I caot create a symlink:

/home/vagrant/my-shared-folder/ $ ln -s /any/path/to/linux/box/folder my-symlink-name

Under Windows 7 it was working with: How do I create a link in Windows 7 home premium as a regular user?

So, has anything changed under Windows 10?