The Great "Server Essentials 2012 R2 Connector Configuration Wizard" Mystery

I'm trying to get to the bottom of a problem I've experienced many times: I have a Server 2012 Essentials R2 server and I want to run the 'Connector Configuration Wizard' so that machines are available in the pool of computers users can remotely connect too.

The machine is a very clean install of Windows 10 (literally nothing on it apart from Windows 10), fully updated and its joined to the domain.

When I run the wizard I am asked to enter a users 'Network user name and password' which I do.  This kicks up an error implying its already been connected (I check - it hasn't).  If I try entering network admin credentials, I get a warning saying 'You entered an administrator account name and password', its recommend you use a standard user account.  Yet when I enter a standard user, I get the original error.  I know from experience that if I enter a network admin account proceed, it works fine.

In summary, I'm experiencing the exact issue outlined here:  http://bobmckay.com/i-t-support-networking/server-2012-r2-essentials-cannot-connect-computer-network/

Any one got any ideas why this occurs?  (its happened to me a bunch of times on different networks).

Thanks

Bob
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Mango-ManAsked:
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Cliff GaliherCommented:
Don't join the domain before running the connector. The error is accurate in that you are already connected to the domain.
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Mango-ManAuthor Commented:
Hi Cliff,

Many thanks for your input - if that is the problem, why does it work with an administrator account?

And if that is the case, does this mean that computers can be joined to the domain without the need for administrative privileges by 'standard' users (not administrators as has always been the case)?  That's a scary thought!

Bob
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Windows Server 2012

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