How do I revoke access?

WD Legacy Products My Book Live
6

No, I’m not saying that at all. 

I’m saying that Windows prohibits multiple NAS usernames to be connected at the same time from the same Windows user.

But that shouldn’t ever be a problem… just make sure all the shares you want to access are allowed by the same user – and log into the Private share(s) before you log into a public one.