400 - Bad Request

400 error and even launching it doesn't doesn't allow login upon the world start map or whatever it's called.  Wouldn't launch without logging in. I use Microsoft defender and malware bytes, both turned off during EA troubleshooting,  they even suggested turning off the firewall which didn't matter. EA support told me this was a known issue for windows 11 and the Sims 3 launcher after doing their troubleshooting, so I turned everything back on when done. 

That was a few days ago. Same experience on both laptop and desktop running windows 11. No issue with desktop running windows 10. I'm not surprised, not going to keep trying on windows 11. Odd thing is my laptop started acting odd, went into an endless error loop, would not reset, repair, or reinstall Windows. It's going in to be wiped/repaired now. Unsure if related or not, but no issues prior to trying their suggestions. =/ Just figured I'd respond regarding this error. I had already tried your suggestions to previous posts. 

Edit to fix spelling. My laptop hard drive died and had to be replaced. Weird timing, though I doubt it had anything to do with the troubleshooting.