I have no Microsoft store at all on my Windows 10 Enterprise, Version 1709.
I've read numerous articles on restoring the Microsoft Store, and none of the simple/non-destructive techniques have worked thus far (GetAppx-package, AddAppx-package, wsreset). I haven't reinstalled or reset Windows - I'd rather live without than go through that. (I'm actually on a first Reset already.) I also haven't tried to find another Windows installation and manually copy things over from there.
I'm hoping that instead the fact that the Microsoft Store Troubleshooter keeps asserting I need to login to Microsoft, when I am already logged in, might indicate a different issue.
Despite being clearly already connected to a Microsoft account:

