Deductions & credits
1. Open your File Explorer (the one with File Folder icon).
2. Scroll down the left panel and click on Windows (C:)
3. Right click on the right panel and then select New then Folder
4. Name that new folder "attachment"
5. Save or copy your Form1116ScheduleB.pdf to that folder
6. Go back to TurboTax and try e-filing again.
Here's a visual of your File Explorer as mentioned above
