I puchased the microsoft professional online i paid $409 USD
To solve the problem, you will need to re-enter Microsoft Office Professional 2010 product key. To do that, exit all open Microsoft Office 2010 products and go to Control Panel > Uninstall a program (Programs and Features).
On the list of installed programs, locate Microsoft Office Professional 2010. Press right click on it and select Change. A new window will open where you need to select Enter a Product Key option so that you can re-enter the product key. Once you have done so, close the window and start any Microsoft Office Professional 2010 product, such as Word to see if that helped.
I have tried all that i still are unable to access all the microsoft applications there is something else wrong noone seems to be bale to help me.