If you right-click a file in Teams and hover over Open, you’ll see you can choose to open that one file using the default or your preferred experience (Teams, app/desktop, or browser).
ONEDRIVE APP VS DESKTOP HOW TO
How to open a file from Teams in the desktop/client app without changing default settings In this post, I’ll cover how to open a file in a different context (Teams, desktop app, or browser) for one-time needs as well as changing your default setting to force all files to open in the desktop version if you wish. We can choose where to open a file before we even open it.
You can open files directly within Teams to have a single context in which you’re able to do your work.