Sorry, I'm under Windows 10 10.0.0.240 X64 I just test all my WinNTSetup - 3.7.9; 3.8.0; 3.8.1.1 3.7.9 - both X86 and X64 starts 3.8.0 - x86 starts 3.8.1.1 - neither X86 neither X64 Anyway, let's hope MS will update OS and your software begin to work.