How To View Visio Files -

: If a colleague shares a Visio file in a chat or channel, you can double-click it to view and comment directly within the Microsoft Teams interface.

: If you have the free Visio Viewer installed on Windows, you can preview VSDXcap V cap S cap D cap X how to view visio files

If you don't want to use the cloud, try these open-source alternatives. : If a colleague shares a Visio file