Fix: Windows 7 Activation Error saying the Product Key you entered can be used only in certain countries or regions

Problem:
When you try to activate you geniune license you receive an error saying:

"the product key you entered can be used only in certain countries or regions. Either activate windows where you bought it or buy a new product"

Cause:
This behaviour is related to licenses sold in developing markets such as southeast asia, south America and more. Microsoft's activation server is geographically oriented and cannot verify your location correctly.

Solution:
Click on the Start menu, and type the following command:
SLUI 4
In the wizard- choose your country and click Next. Now complete the Phone Activation procedure as instructed.