Hello claude2929,
My name is Joanna, I’ll be happy to help you out today.
Please refer to the steps below.
Ensure your users use these methods to share files and videos securely:
- Store files in Microsoft Teams or SharePoint, and make sure that only the people who need access to those files have them.
- When you want to share, don't attach files to an email. Instead, choose Get link from Microsoft Teams or SharePoint and send the link in email.
- To share a file externally, add the user as a guest to your team, or use 4. SharePoint to get a secure link to share just that file.
- Use Microsoft Stream to host videos you want your campaign to see.
- Use Microsoft Teams or SharePoint to store video files you need your team to collaborate on or share.
For further information, please learn from the link below.
https://learn.microsoft.com/en-us/microsoft-365...
Let me know if this doesn't work or if you need further assistance.
Thank you.