same problem here. mosaico cant start because VCRUNTIME140.dll apparently is missing.
I tried updating Xdirect,
updating NVidia driver,
downloading VCRUNTIME140.dll and copying it in the folder of mosaico.exe, (then a different error code comes up: app cant start: 0xc000007b )
substituted the old VCRUNTIME140.dll in windows folder,
running as administrator,
I bought a mosaico license yesterday.
Also the installation of Visual Studio 2015 dlls didnt help.