Installing VC++ Redist package should fix the problem as the missing dll is contained in it.
There’s a more recent version than the one I linked. It’s the “Microsoft Visual C++ 2015 Redistributable Update 3 RC” and you can find it here:
Please be sure to download the one for your system architecture (32 or 64 bit).
Please try this:
– Install Microsoft Visual C++ 2015 Redistributable Update 3 RC
– Restart your PC
– Do a clean install of Mosaico as described previously
Please let me know if this fixes the problem for you.