When Grand Theft Auto IV for PC came out it was done under Games For Windows Live. The Microsoft platform lasted a sigh since did not have a good reception from the players, so the Redmond decided to close. For many years the game was available on Steam, but last January 2020 it was removed from the Valve platform.
Rockstar Games has announced that Grand Theft Auto IV will return to Steam on March 19, how can we read in Polygon. However, there is bad news, support for multiplayer mode has been removed, also the leaderboards. This is not something temporary, rather definitive. It seems that it has been the price to pay for the withdrawal of Games for Windows Live.
All those who have GTA IV you can download Grand Theft Auto IV: Complete Edition. In addition, this will be the edition that will be available to buy from March 19 on Steam and Rockstar Games Launcher.