Re: getting "unable to start game service initialization failed (0x039e8474)"
@mnorto8 , do the following. Uninstall the game before trying to do this. This works for Windows 10.
1) Install the game from Origin.
2) Install Base game alone. Repair the game before launching it.
3) Launch game, disable Origin In Game while Error code window is open and then close the Error code window. Also clear all cache files from Documents > Electronic Arts > Sims Medieval.
4) Repair the game again.
5) Download and install Pirates and Nobles.
6) Repair the game again and clear the cache files one more time.
Please let me know if this works.