Activate volume editions of Office
There are two types of activation methods for volume editions of Microsoft Office: Multiple Activation Key (MAK) and Key Management Service (KMS). If you have a system administrator, he or she can tell you which type of activation you must do. If you don’t have a system administrator, most likely you must activate by using MAK.
If you must activate by using MAK, you need to get or your administrator must give you a MAK key.
If you must activate by using KMS, you must ask your administrator for help with the KMS host or your computer.
Activate by using Multiple Activation Key (MAK)
In Office 2010, click File > Help > Change Product Key.
In Office 2013, click File > Account > Change Product Key.
Enter a MAK key.
If you check the Attempt to automatically activate my product using the Internet box, complete the product key entry process.
Restart your Office program.
In Office 2010, click File > Help.
In Office 2013, click File > Account.
If you see Licensed Product, the product has been activated.
If you don’t check the box to activate automatically, you are asked to activate the next time you open an Office program.