hello guys when i start iw5m it says:

 

error during inizialization:

steam must be running for initial authentification to succed.Please start Steam and restart the game to continue

 

what must i do to fix

Buy the game on steam and then play the game. There are ways to bypass that, but i won't tell you. It will probably teach you how to use the search button.

You'll have to buy the game because creating a folder and name it dw won't help you.