Can't download, button greyed out

As the title says, the button is greyed out and I cannot download it sadly, I could before, a few months ago but cannot now?

x780TI, tried it with SLI disabled and enabled.
i7 3770k 3.9,
16GB ram,
Directx12
Windows version 1511

You need anniversary update.
Read requeriments:
Windows 14393.0 (1607)