Problem
When trying to upload a file to D2L, you receive the error: "Oops. File could not be submitted", and the upload fails.
Environment
D2L
Resolution
Remove all special characters (like punctuation, etc) from the file name and try again.
Mac users may need to remove spaces from the file name as well.
Cause
Special characters sometimes (but not always) breaks the upload process. Removing them from the file name works around this issue.