To block file sharing in Microsoft Teams for a user, you can follow these steps:
- Open the Microsoft Teams admin center.
- Click on "Teams" in the left-hand menu.
- Select the team that the user is a member of.
- Click on "Settings" in the top menu.
- Under "Settings by user/license type", select the user you want to block file sharing for.
- In the "Messaging" section, toggle off the "File sharing" option.
- Click "Save" to apply the changes.
Note that this will only block file sharing for the selected user in the specified team. If you want to block file sharing for all users in all teams, you can do so by modifying the Teams messaging policy.
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