Introduction

You can delete the files you shared in the channels of your Teams. 

Instructions

1. Select the specific Team and the specific channel in which you have shared the file from your Teams list (on the left).
2. Click the Files tab on the top menu.
3. Find the file you shared in the list, and then click the extended menu (3 dots …) after the file name.
4. In the dropdown, select Delete to delete the file you shared there.
   
    

NOTE: To permanently delete a file you must go to the Recycling Bin in your team SharePoint. Refer to this article from Microsoft on how to delete a file, folder, or link from a SharePoint document library.