By default, the Microsoft Surface Go
is set up in S mode.
According to their FAQ
applications that are compatible with S mode are only available in the Microsoft store which are specifically designed to run on
the respective processor of your device. We have not yet tested to see if our applications can be installed outside of the
Microsoft Windows store or not, but it should if you switch the Surface Go out of S mode which is available for free from the
Microsoft Store. However, once it is switched out of the S mode, you cannot switch it back.
We will be testing the Surface Go in the near future once available.