Install or upgrade to the latest version of Office See How do I upgrade Office? for more details. To ensure the security of your Office suite and to get all of the latest features, upgrade to the latest version of Office for free as part of your Microsoft 365 subscription. Microsoft 365 subscribers can no longer download or install Office 2013 on PC or Office 2011 for Mac from the account portal. Microsoft 365 for home Office for business Office 365 Small Business Microsoft 365 admin Office 365 operated by 21Vianet Office 365 operated by 21Vianet - Small Business Admin Office 365 operated by 21Vianet - Admin Microsoft 365 for Mac Office 365 Germany - Enterprise Office 365 Germany - Enterprise admin More.