When I tried to install Crysis 3 I always got this error:

Error: A redistributable package (DirectX) was not installed successfully.
Setup cannot continue. (-1073741819)

What should I do? Install the latest DirectX version?

First of all, you need DX11 for the Alpha test, if you don′t then it wont work.

If you do yes, first update DX11, and if it doesn′t work delete and download the Alpha again.

Thanks, it works