@Itacir Gabral - There are two ways to send files to and receive files from a bot:
Use the Microsoft Graph APIs:
This method works for bots in all Microsoft Teams scopes:
personal
channel
groupchat
Use the Teams bot APIs: These only support files in personal context.
Sample link:
https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/bots-filesv4#code-sample
Thanks,
Chetan Sharma
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@Itacir Gabral - We will check on it from our end and let you know, if we find any solution for it.