Share and co-edit a file in a channel

Files posted to a channel are shared with the whole team and can be edited together in real time. No emailing copies around.

1. In the channel, open the Files tab or attach a file to a message.
2. Upload from your PC or pick one already in the team’s library.
3. Click the file to open it in Teams, or choose Open in app or browser to edit.
4. Multiple people can edit at once — you’ll see their cursors and changes live.
5. Use @mentions in a comment or message to pull someone’s attention to a section.
6. Everything saves automatically to the team’s SharePoint, with version history kept.