can not open the sims4 after eaapp prepared the game

@ju3t_6e_6ea91e  As a test, please try playing in a clean user folder.  Move the entire Sims 4 folder out of Documents > Electronic Arts and onto your desktop, and when you launch the game, if it launches, a clean folder will spawn with no content.  (Your saves and other content will be intact in the folder you moved but temporarily not read by the game.)  Don't add anything to the new folder yet; just let me know whether you can get far enough to start a new save and play in live mode for a bit.

If that doesn't help, please run a dxdiag and attach it to a post.

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

Thank you for your help! I opened and played the game successfully with my old Electronic Arts folder yesterday.  But today I failed opening again, even in a clear user folder. 

here is my DxDiag report.

@ju3t_6e_6ea91e  Your dxdiag does show one Sims 4 error, but not one that should prevent the game from running.  So it's more likely that Sims 4 is being blocked instead of crashing as it launches.  For that, do you use a third-party antivirus, and if so, does it help to set exceptions for TS4_x64.exe and EADesktop.exe?

You may need to (temporarily) disable the antivirus, repair the game in the EA App (My game library > Sims 4 > Manage > Repair), then reenable the antivirus and set the exceptions without launching the game in between.  The idea here is that the antivirus could block the repair too, or if you try to play right after, it could block Sims 4 after the repair but before you've set the exceptions.

If that doesn't help, is OneDrive running on this computer, and does it help to pause syncing?  You can see the option by right-clicking the cloud icon in the lower-right corner of the screen.