What is the minimum amount of documentation I should keep to prove my software products are legally licensed?
All legally licensed Microsoft products should contain an End-User License Agreement (EULA), which is your primary proof that you own a legally acquired product. However, it is also recommended that you keep the original user's manual (or at least the cover and first page of the manual), the product disks, the Certificate of Authenticity, and your purchase receipt.
Questions and answers about the End User License Agreement
