Up front: no solution
It seems not to be limited to Elements though.
I have a 3TB MyBook that is not listed in Windows 10 either.
So, I have 4 WD-external drives, 2 are being displayed, 2 not.
The ‘My Book’ 3TB drive is my backup drive, so until that is fixed I can’t run backups.
Initially none of myl 4 drives were not displayed, but after the 3rd reboot, 2 were, 2 not.
I returned to Windows 7.
Very weird …
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