Grand Theft Auto IV (GTA IV) is the fourth independent GTA game published by Rockstar Games and developed by Rockstar North.

Issues

GTA IV has stopped working error

The steam version of GTA IV displays a windows error dialog when trying to play the game. The issue lies with the Windows Live ID sign-in assistant being disabled.

Solution

Simply re-enable the Windows Live ID sign-in assistant service to fix this problem.

Click on Start
Type in services.msc
Scroll down till you see Windows Live ID sign-in assistant
Right click on it
Click Properties
Change the Startup type to Auto
Click Start
Click OK
Start GTA IV