Older versions of Microsoft Office should be uninstalled first before installing Microsoft Office 365 Professional Plus.
Note that once installed, you can run Office 365 programs both offline and online. A common misconception with Office 365 is that, you need internet to use it. Microsoft Office 365 Professional Plus contains Word, Excel, PowerPoint, OneNote, Outlook, Publisher, Access, Sway, Forms, SharePoint, Delve, Yammer, PowerApps, Flow, Stream, Teams, Dynamics 365, Skype for Business and more. Do not forget your password, it is irretrievable once forgotten to ensure accounts are never accessed by anyone else aside from the first person that logged in. Microsoft requires that password is changed on the first login, you can also change your password anytime in your Office 365 dashboard. This is a Lifetime subscription and not a monthly or annual account thus, Pre-generated username is permanent and not changeable. Software is automatically activated for life when downloaded from your account. No annual or monthly subscription is required. This is an account containing a username and a password needed to install Microsoft Office 365 Professional Plus Lifetime Subscription on up to 5 Main device either a PC or MAC/ Instant Order - 10 Seconds after payment.You can Install LOCALLY on ANY PC or MAC.You will get a Username / Password (Will ask for new Password at login).