I'm having the same issue. Tried just about everything besides coding the game myself and no one's solution has worked for me. Even went so far as to removing the SelfUpdate folder from the Origin Program Data folder with no luck. If anyone gets an answer for this, PLEASE HELP!
Or maybe just teach me how to get my Origin games onto Steam (without them being installed on the PC - had to factory reset PC and now starting from scratch unfortunately) because we need a solution that shows EA how disappointing they are, and a mass migration to another app would be a brilliant slap in the face: MAKE SOMETHING THAT WORKS AND KEEP IT THAT WAY FOR ALL CUSTOMERS, EA GAMES! Can't believe the company has the balls to remove their old platform when they haven't ironed out all the creases of the new one - ESPECIALLY compatibiltiy with new OS, like c'mon, it's 2023, SURELY we're over this technical hurdle by now! ☹️
One of the suggested solutions to "cannot install the EA app" for playing The Sims 4 was to uninstall The (Origin) Sims 4, login to Steam and download the (free) Sims 4 base game, link Steam account to EA account and the DLCs will then show up on Steam.
Sadly I cannot verify this however since once the game is launched Steam launches Lets GO get the EA App splash screen promptly returns an error message. (I am also using Windows 11 fyi.)
Probably not what you want to hear.
UPDATE:
I found another thread with a link to an EA Desktop Client Download installer file. Doing this caused my computer to freak out and crash, but upon restarting, EA has downloaded successfully and I am currently downloading some games!
Here's the thread link, comment #30:
Hope this helps anyone else as well! Good luck!
