Hi @GoodResource ,
I was wondering if there's any way we can restrict file size to not go beyond certain limit for attachments to be send over on Teams.
This is not feasible at present.
As we can learn from this document, from the perspective of Microsoft Teams, it only has a limit for the number of file attachments. Actually, when we upload a file over Teams chat, it uploads to OneDrive for Business or SharePoint(see File storage in Teams), so it's controlled by the SharePoint/OneDrive limits which is 250GB and currently not supported to be customized.
Reference:
- SharePoint limits
- What are the limitations(size limit) for the single file upload / dragged dropped in sharepoint Online document library? Is this file size limit configurable?
Then I tried searching around and noticed some similar feature request in the feedback portal for SharePoint. I've voted them and you can also vote or comment there. Hope this can be realized in the near future.
Add a feature to limit the file size when uploading a file to SharePoint Online
Set an upper limit on the size of files that can be uploaded
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