Why?

Canvas is investigating the cause.

Impact

When a student submits a file from Google Drive or Office 365 to a group assignment on behalf of their group, Canvas does not recognize it. No error message or warning is given, and there is no indication that it was unsuccessful. Individual assignment submissions do not experience this issue.

Action Needed

The workaround is for the student to download the file from Google or OneDrive, then directly upload to Canvas from their computer.