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 7

  1. Click the Windows button
  2. In the search box type cmd and then hit Enter.
  3. In the Command Prompt window type wmic os get osarchitecture



Windows 8.1 and Windows 10

  1. Right click on the Windows button and select Run.
  2. In the Run window type cmd and then click OK.
  3. In the Command Prompt window type wmic os get osarchitecture


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You should see output as shown above which indicates if you are running a 32-bit or 64-bit version of Windows.