Hello everybody, i'm wiriting to fins a fix for my Call of Duty MW3 error. I've installed the full game, take and copyed the DLCs in the right folder, same for the iw_xx. But when i launch the game, i'll give this error:

 

"Error during initialization:

Steam must be running for initial authentication to succeed. Please start Steam and restart the game to continue."

 

anyone can fix this? thank for replies

Start steam....you must have MW3 bought to play on IW5M.

Well let me guess you don't have the game bought on Steam ? If you do then start Steam. If you don't I would look at what mufff.in/3/ says, under the picture.

Ok i've fixed it. Thanks for replies, and now good game comrades :twisted:

 

/Request Lock

Create a Folder name "DW".maybe it's work it's work on me.