Upgraded to dual monitors and Sims 4 wont play

@swuerfel  Try forcing the game to launch in windowed mode.  Go into Documents > Electronic Arts > The Sims 4, open Options.ini, search for fullscreen , and set it to 0 (zer0).

If that doesn't help, plesae run a dxdiag, with both monitors connected, and attach it to a post.

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/