You need to download a version of the client installer which matches the architecture of the operating system, this will be either 32-bit or 64-bit. If you are unsure if you are running a 32-bit or 64-bit version on Windows you can check using the following methods:
Windows 8.1 and Windows 10
- Right click on the Windows button and select Run.
- In the Run window type cmd and then click OK.
- In the Command Prompt window type wmic os get osarchitecture
You should see output as shown above which indicates if you are running a 32-bit or 64-bit version of Windows.