However, there are certain login limits associated with your subscription plan and thus the number of logins is strongly fixed according to it. You will most probably be asked to provide your login details after Office installation so that you can use the applications further. With the proper login details, you will be able to enjoy its prominent services like Office Online and OneDrive. To experience its extraordinary features like creating, editing, and sharing of files, one needs to sign in or log in to their Microsoft Office Account.