Check out this guide from Microsoft: Collaborate on files in Microsoft Teams
Items to note about Teams file collaboration:
- Co-authoring is ONLY compatible on .docx, .xlsx, and similar files. You will NOT be able to collaborate on older files, such as .doc, .ppt, etc. (the ones without the x at the end)
- Files uploaded within Teams can be found in your organization's SharePoint document library (there's a link to it in the File libraries on Teams). SharePoint's document library will allow you to look at file organization in a view similar to File Explorer.
Need more help?
If there's anything we can do to improve your transition to Teams, please let us know!
Also, once you're in the Teams app, click the Search bar at the top of the screen (or simple press Ctrl+E on your keyboard), then type /help and press Enter to get instant access to helpful Teams guides from Microsoft.