DUB does not run on Windows 10/64

[Bienlein]

Hello,

I downloaded dub-v1.18.0-windows-x86_64.zip und unzipped it on my 
64bit Windows 10 system. When running dub it complains:

The version of C:\d\dub-v1.18.0-windows-x86\dub.exe is not 
comptaibel with the Windows version in use (translated roughly 
from German, because the error message is displayed in the 
Windows installation language).

But my Windows box is 64 bit. Microsoft Windows [Version 
10.0.18362.418].

Thanks for any hints.