Hello & welcome, There is in progress an update to Outlook.com that lets you make the most of the moments that matter to you—featuring a refined inbox, an upgraded calendar and more. The update being rolled out in Preview, is the first of many innovations coming as Microsoft upgrades Outlook.com to a new Office 365-based infrastructure. There is no returning to what was. With time & more information we will have to get used to it if we wish to continue using this free web based email service. Microsoft MVP 2013, 2014, 2015, 2016. Windows Insider MVP July 2016 - June 2017.
When working with older versions of Microsoft Outlook such as Microsoft Outlook 2007, there might be times when users want to upgrade, or otherwise have a fresh install of the upper version of MS Offi.