Is there an advantage to purchasing Windows 10 from the Microsoft store?

OK, in that case it's not working "OK". I suggest using the option to activate by phoning Microsoft. Explain what you have done.

 

Perhaps something related to the Microsoft account setup; not created or problems with it?

 

I have finally got it activated. I tried the suggestions made on this post but none of them worked so I did a search and found that many people were having the same problem. I found that stopping and disabling the Plug and Play service temporally as one of the solutions. I went into services and stopped it and then tried to activate it and it went great! It is now activated! I then went back to the services and started Plug and Play back. It's all working now and thank you everyone for your time and help!

 

That is a weird one I have never heard of before.

 

Cathy, nice work. I'll remember your fix.

 

This is the explanation that was given as to why Plug and Plug was keeping it from working: The problem happens because you have the "Plug and Play" service set by GPO. Sounds weird but have an explanation.
When you set the "Plug and Play" service by GPO, the service is set with default permissions:

Allow - BUILTIN\Administrators - Full Control
Allow - NT AUTHORITY\SYSTEM - Full Control
Allow - NT AUTHORITY\INTERACTIVE - Read

The permissions granted to the "Plug and Play" Service do not grant the Licensing Service (sppsvc) the appropriate rights to access the Plug and Play service.
When I saw it, I thought I'm going to try it because I've got nothing to loose by trying. It happened so fast it was shocking but I'm not complaining. I thought then I need to respond to this thread and let people know what worked so maybe it will help others out to. I'm just glad I followed your advice Brian, about waiting and also went by my "gut instinct". And that was, I thought with my luck if I purchased Windows Pro, it probably still wouldn't activate so I waited and I'm so glad I did! Again, thank you everyone for your help!