I have done that, but it asks me to 'trust this computer' and enter username / password.
I'm going by memory. I'll re install again and see if I can just skip the part where it asks me for my Microsoft account information.
You can install with a local account and password. If he wants to reinstall with his MS ID, he can go for it.
If you do not see the option for Local Account, enter a bad
MS ID and password. It will then prompt you create a local account.