To download the .exe according to your Operating System, please follow the steps below:
Obtain the machine architecture.
For Windows Server 2012 / 2012 R2 / 2016To go to the Start menu, position your mouse in the bottom-right corner of the Remote Desktop of your screen.
Open a CMD console (Click Task Manager → File → Run new task, and enter CMD).
Enter the following command:
echo %PROCESSOR_ARCHITECTURE%
On an x64 (64-bit) machine, the output will be “AMD64”.
Go to the Mellanox WinOF web page at http://www.mellanox.com → Products → InfiniBand/VPI Drivers → Windows SW/Drivers.
Download the .exe image according to the architecture of your machine (see Step 1) and the operating system.
The name of the .exe is in the following format: MLNX_VPI_WinOF-<version>_All_<OS>_<arch>.exe
Installing the incorrect .exe file is prohibited. If you do so, an error message will be displayed. For example, if you try to install a 64-bit .exe on a 32-bit machine, the wizard will display the following (or a similar) error message:
![image2019-3-10_15-25-53.png](https://docscontent.nvidia.com/dims4/default/63a0ed6/2147483647/strip/true/crop/341x136+0+0/resize/341x136!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F00000187-94ca-d3c2-a7af-9fdea41c0000%2Fimages%2Fnetworking%2Fdownload%2Fattachments%2F12007000%2Fimage2019-3-10_15-25-53.png)