Make sure that your Microsoft account is associated with an Office login service and subscription. Check if it is actually associated with Office 365 and Office 2016 subscriptions. If your Office product is a Microsoft 365 subscription and not your email address, this will not work when you sign up for Office. Try to log in with your private email address if you bought Office with a different email address. Check the date, time and time zone of your computer; if they are incorrect, Office activation will fail. If the time and date icons are missing from the taskbar on your computer, click Start > Settings > Time & Language. The system time is set to the local time zone in which the user wants to activate the product. Right-click the Time & Date icon in the taskbar and then click on the Option Customize Date & Time in the menu that appears. Enter the product key again, try another activation method, or contact Microsoft Customer Service if your attempts are unsuccessful. If this is a temporary problem, you can restart Outlook and the error message Outlook Unlicensed will be fixed. If upgrading Microsoft Office to the latest version does not help, you may be needed to uninstall your product key and not fill the login email or license associated with activating Microsoft Office. If you have tried other solutions and still have difficulty activating the latest versions of Office installed that you have not activated, you will either need to remove the product key or log into your account to reactivate Office. If Office is not enabled, try performing the online repair described in Repair Office Applications to fix the remaining installations of Office. Install and install Office 365 on your computer with the license enabled. Once you are logged in, you will receive one of the license links to activate the product. https://www.officelivesupport.com/outlook-unlicensed-messages/



