I don’t know the cause of NTFS corruption of my external SSD, in my new “Windows 10” 2-in-1 PC.  Other comment posts seem to link the issue to the file system and the “Fast Startup” power option.  (This change to the PC shutdown, is basically just is old hibernate mode used all the time.)  I find this interconnection hard to believe, to an external non-bootup drive.

The fix I found for this was running “chkdsk /f e:” from the new “Command Prompt (Admin)” command found after hitting the Windows Key and x at the same time.