VC++ redistributables 2008 (x64) resolved starting problem for me. But I better not have installed this software at all. Now my computed does not recognise the S6 at all, and the program itself cannot connect to it either.
This helped me too. Wonderful. I wonder why Samsung did not include the Visual C++ with Smart Switch. Also Samsung refused to help me as I was not in the USA. What a shame. Making good hardware is not enough, they have to make good software too.
it is very easy with using samsung smart switch app. First run disk clean up wizard, second run the ccleaner app to remove all the junk registry files from PC. After that you should first install 2008 Microsoft Visual C++ Redistributable package, to the pc. and then you will easily download smart switch pc app to transfer your data securly to your galaxy device.