Assuming you are having .wsdl file at location "E:\" for ease in access further.
Prepare the command for each .wsdl file as: E:\YourServiceFileName.wsdl
Permissions: Assuming you are having the Administrative rights to perform permissions. Open directory : C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin
Right click to amd64 => Security => Edit => Add User => Everyone Or Current User => Allow all permissions => OK.
Prepare the Commands for each file in text editor as: wsdl.exe E:\YourServiceFileName.wsdl /l:CS /server.
Now open Visual studio command prompt from : C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\Shortcuts\VS2013 x64 Native Tools Command Prompt.
Execute above command.
Go to directory : C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64, Where respective .CS file should be generated.
Move generated CS file to appropriate location.
