One day while starting the game, Fallout3.exe noticed a pop-up window with the error:
The ordinal 42 could not be located in the dynamic link library
C:\Windows\SYSTEM32\xlive.dll.
So, this error is solved easily and quickly by installing the application “Games for Windows Software”.
Download it at the link:
http://go.microsoft.com/fwlink/?LinkId=98609
That’s all.