How you purchase them, along with which Office release you purchased – for example, Office 365 or Office 2016 – determines what installation technology is used to install Office. For example, you can purchase them as part of an Office 365 (or Microsoft 365) plan, as a one-time purchase from a retail store, or through a volume licensing agreement.

There are different ways to purchase Office, Project, and Visio.

Office 2010, which is no longer supported, had a version of 14.0 and used Windows Installer (MSI) as the installation technology.Office 365, Microsoft 365, Office LTSC 2021, Office 2021, Office 2019, and Office 2016 all have the same version: 16.0.For steps to find this version in different Office releases, see Find details for other versions of Office. On the top line of the About Microsoft Word dialog box, you will see the version number. For example, open Word, and go to File > Account > About Word. You can also find this version in the About dialog for the Office app. You can find this version information by going to Control Panel > Programs > Programs and Features. Office releaseĬlick-to-Run Windows Installer (MSI) Microsoft Store For example, the subscription version of the Project desktop app or Visio Professional 2016. The information listed in the table also applies to releases of Project and Visio. The following table shows Office releases that are currently supported by Microsoft, their associated version, and all the possible installation technology. See the example installation scenarios section for several examples of installation scenarios that are supported and not supported, along with an explanation of why they are or aren't supported, based on the rules listed above. You can't install two products of different versions together if both products use Click-to-Run as the installation technology and those products have overlapping Office applications.You can't install two products together that have the same version but use different installation technologies.What governs whether an installation scenario is supported are these two rules: The two main things that determine whether Office, Project, and Visio can be installed together on the same computer are the version of the product and the installation technology used to install the product. But, there are some combinations of Office, Project, and Visio that can't be installed together on the same computer. In many cases, you can install Office, Project, and Visio on the same computer. Supported scenarios for installing different versions of Office, Project, and Visio on the same computer

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