You can find this version information by going to Control Panel > Programs > Programs and Features.

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 Microsoft currently supports, 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 these rules. 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

Visio ltsc professional 2021