The usual solution to this (and I hope that it works for you) is to going to C:\Program Files (x86)\Steam\steamapps\common\chivalrymedievalwarfare\Binaries\RedistChiv in Windows Explorer. Run the two vcredist executable files. Then go into DXRedistCutdown and run DXSETUP.exe.
Then try playing Chiv again from Steam.
All that i doing… but unsuccessful :x :x :x