Normally, this product key is on a sticker attached to the inside of your disc case or with the manual that came with Office 2010. If you downloaded Microsoft Office 2010, your product key was probably included in an email from Microsoft.
If you've lost your product key, don't worry. It's located in the registry but it's encrypted, making finding it difficult without help.
Follow the steps below to locate your Microsoft Office 2010 product key code.
Manually locating the Microsoft Office 2010 product key from the registry is nearly impossible due to the fact that it's encrypted. Luckily, a number of free programs exist to help find product keys.
Choose a free product key finder program that supports Microsoft Office 2010.
Note: Any product key finder that locates Microsoft Office 2010 product keys will locate the product keys for any edition you may have including Microsoft Office 2010 Professional, Standard, Home and Business, Home and Student, Professional Academic, Professional Plus, and Starter.
Download and run the key finder program. Follow any instructions given by the program.
The numbers and letters displayed by the program represent the Microsoft Office 2010 product key. The product key should be formatted like xxxxx-xxxxx-xxxxx-xxxxx-xxxxx - five sets of five letters and numbers.
Write this product key code down exactly as the key finder program shows it to you for use when reinstalling Microsoft Office 2010.
Note: If even one character is written down incorrectly, the installation of Microsoft Office 2010 that you attempt with this product key will fail. You must transcribe the key exactly!
If you need to install Microsoft Office 2010 but you've tried everything and still can't find your Office 2010 product key, you may have to purchase the software suite all over again.