How much disk space do you have? What is the requirements for the Office version you are trying to install? I think those things already come with Office 365 pre-installed with a one year license according to this review http://liliputing.com/2015/10/acer-aspire-one-cloudbook-11-review-a-windows-10-notebook-for-under-200-but-it-comes-at-a-cost.html