Microsoft Office 2013 Activation - Error 0x800070005

I have some customers who do not volume license their Microsoft Product and need to activate their Microsoft Office products. This particular customer bought a laptop with Microsoft Office 2013 pre-loaded and purchased a separate Microsoft Office Home and Business 2013 1PC License, however when they tried to activate the license by entering in their product key they kept getting a pop-up error message;

"We're sorry, something went wrong and we can't do this for you right now. Please try again later. ( 0x80070005 )".

The error occurs because the user account does not have appropriate permissions to modify the registry[1]. Thus the activation needs to be run with Administrator privileges[2]. So I right clicked on Word and selected Run as administrator and it activated automatically.

References:

1. http://support.microsoft.com/kb/968003
2. http://techhstuff.blogspot.com.au/2014/01/office-2013-activation-pop-up-with.html