Teams allows to retrieve a file deleted. Here is how.
Recover a delete file in Teams
- From the desktop Teams app, select the Channel in which you have deleted the file.
- Click on Files.
- In the ribbon, click on Open in Sharepoint.

- You will be redirected to the WebApp and you’ll see the same files and folder than in the Teams desktop app.
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On the left panel, select Recycle Bin


