The visual studio give me error "project target framework no installed on this machine" but i'm installed it and installed developer back framework 4.6 in visual studio 2013 what's the problem ? i want to use 4.6 framework in my visual studio ?
In spite of installing developer pack , you should try to do a VS 2013 repair.
Or maybe you are missing some frameworks you should check on Microsoft Site if you have all the requirements .