How to fix it
1) check you Win 10 if it is 64bit version
2) then go to the game files
3) start CoH 2 from the game files
4) if it says VCOMP140.dll missing, the rest of the guide will help you if not sorry
5) go here [link]
6) it´s official MC site and click download
7) you will see what kind of file you want download select both vc_redist.x64.exe and vc_redist.x86.exe
8) wait till it´s downloaded and start it
9) it needs to install and restart your PC
10) now you can play CoH2