For computers that came with Office pre-installed, look for a sticker on the chassis of the laptop or desktop.
The paper provides best practices for users to protect their Office 2010 Home and Business product key, such as: office 2010 home and business product key
For business environments, using non-genuine keys can lead to significant compliance issues during audits. Modern Alternatives For computers that came with Office pre-installed, look
The 25-character key (formatted as XXXXX-XXXXX-XXXXX-XXXXX-XXXXX ) is located in different places depending on how you purchased it: such as: For business environments