Change key office 2013

You try to activate Office 2013, and it simply does not accept the key contained in it, but does not give you the option to fill a new key. 

Then, the procedure to put the correct key is as follows: 

Go to Control Panel 

Go programs 

Click Uninstall Programs

Listed locate Microsoft Office and click Change, then you have the option of putting the right key 

And with the right key, then after installation you will be able to activate your office