Now I know how to fix RUU error 171 on Windows 10x64 easily
This is brilliant. Could have found this two years earlier. *Facepalm*
System: Win 10 Redstone (1607) x64 with Intel based USB3.0 and USB2.0 ports.
Steps I took:
- Sync Manager from HTC Website (current 4.17.0.001 driver)
- Imported Reg-File from Post #1