Earlier today, we upgraded one of our desktops from Windows 7 to Windows 10.
The Windows 10 installation is flawless, except I immediately realized the "Unusable Parallel Port (LPT3).
I navigated to Moschip and then ASIX Electronics, excited to see the new driver as of 2015-09-09. However, the new x64 driver package did not solve the problem.
Device not migrated
Support - ASIX Electronics Corporation
We will be downgrading to Windows 7 if the issue isn't able to be resolved quickly.