Has anyone run into this Launcher connection issue today? I saw a thread from about a month ago with folks experiencing the same issue. Seems like it has something to do with an EA/TheSims3 server error ... ?I also noticed that Edge (which I don't use) went through an update at some point. Not sure if that's related to the "400" issue, though. I've run though as many troubleshooting steps as possible like clearing cache, adjusting network settings, etc. (minus un/re-installing all my games), still no luck. I can still login to the Sims 3 website, but when I try downloading content, I get the message on the Launcher that "there was an error while downloading". And then there's the Log file info:2026/01/21|15:22:30|assetId: 7476480|Exchange Download Failure. Download manifest server error.||||Build Version: 1.69.47.024017|Platform: PC|Locale: en_US|Content URL: http://store.thesims3.com|Web Services URL: http://igs.thesims3.com|I can play the game no problem, but I was just getting started on cleaning up content I've had stored on the Exchange for more than a decade, and it's looking like it has to be uploaded through the launcher for me to even get the packs in an accessible format to clean them. I hope it's resolvable, and I really hope it won't take weeks/months like what others have experienced 😓

puzzlezaddict, I really appreciate you for responding and for offering those troubleshooting steps. There were a couple snags out the gate, so I'll recap what I ended up doing in case it helps others later. clear Edge's Internet Explorer-mode data: This should be a simple first step. In Edge, navigate to Settings -> Privacy, search, and searches -> Clear browsing data -> Choose what to clear. And from there, the option to clear IE-mode data should appear as a blue hyperlink at the bottom of the menu, right ..... ? Nope, not for me!I mentioned in my OP that I don't use Edge as my browser. So, I figured the option wasn't appearing because I didn't have any IE-mode data to clear in the first place. To test this, I went through additional steps to turn on IE-mode through Edge (here's a walkthrough) and added the Sims3 website to the list, just to make sure something would trigger the IE-mode setting. After I visited the Sims3 website and clicked around other sites a bit, I went back through the steps to clear the data, et voilà! After that, I opened and closed the Sims 3 Launcher a couple times for good measure, but it eventually returned to normal and I was able to download my Store/Exchange/Studio content through it just as before. Maybe there were other factors involved that I'm unfamiliar with, but the point is, we're up and running!Thank you, thank you 🫶

Hey there,Is anyone else getting this issue when trying to use the launcher?I'm trying to get back into the game for some cozy fun, even just bought some content to play with from the store. However, I can't download it because it keeps asking me to put in my password, even when I'm already logged in. It just won't accept it.For what I have already done:Restarted the launcherUsed Repair on the EA launcherUninstalled and reinstalled the gameRestarted my computerCleared the cache on both explorer and Chrome.Renamed the folder in documents so it would reset.Nothing has worked, so I'm coming here... I hope someone can help or I'm just out of 40 dollars... Sigh...

SiegeWeapon I tested this just now on my Mac, and the launcher loaded as normal. I had no trouble downloading one set from the Store and one item from my studio. So the Store and Exchange are working from the EA side, at least in general. There of course could still be a problem in Windows. No one else has reported this issue today, so you might be the first, or this might just be on your side. To that end, please clear Edge's Internet Explorer-mode data. If that alone doesn't help, do it again and at the same time, move or rename the Sims 3 folder in Documents > Electronic Arts so the game creates a new one the next time you open the launcher. You can test with this new folder in place, and when you're done, delete it and restore the old folder, or move your saves and other content over from the old folder.

I have the same issue and I tried to do the same to fix it. But my sims3 launcher does not show anything it remains only blue without a possibility to sign in and in game when chossing a world it wont allow me to sign in either. Yet it does work on the sims3 store and EA website. When I try to download something from the Sims3 store the launcher does ask me to sign in but it wont led me and just keeps asking to sign in again (no error message either just pops up again) which makes it unable to download anything from the store site. Has anyone found anything else that helped ?

Thank you for your message! Turns out I also couldnt find the IE data to delete and accidentally kept deleting Edge data. After following SiegeWeapons instructions more closely I was able to enable and delete the IE data which fixed the sims3 launcher ! But still thank you for thinking about my problem, I appreciate it :)

400 - Bad Request | EA Forums

29 Replies

puzzlezaddict
Hero+
29 days ago
lykanthropy You're getting the error 400, and nothing in this thread has helped? Please go over all the suggestions if you haven't already.

If those don't or didn't help, try clearing Windows temp files:

Click Windows key-R and enter %temp% in the run box

You should be in C:\Users\your username\AppData\Local\Temp

Delete everything inside; if you can't, restart the computer and try again

Restart (again) after you've deleted all the files and folders
Siran_Elvin
Rising Newcomer
24 days ago
This worked for me when I had "Connection to server has been lost"

Thank you!
lykanthropy
Seasoned Newcomer
23 days ago
None of that works for my computers with windows 11. It has no issues on Windows 10 though, I can play on an older computer. I've messaged the EA team.
puzzlezaddict
Hero+
23 days ago
lykanthropy Are you getting the error 400, or something else? And what antivirus does your Windows 11 computer use?
lykanthropy
Seasoned Newcomer
22 days ago
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.
Mumma_Bear2594
Newcomer
18 days ago
Hey! Sorry I can't help! I too have had this problems MULTIPLE times! Its happened right now! A few weeks ago, I had to set my computer completely. I'm trying to find a solution on Google, But Nothing! I really don't want to factory reset my computer again!
SnowyCascades
New Novice
15 days ago
I'm having the same problem and nothing is fixing it.
LaBlueDahlia
New Novice
15 days ago
I was able to clear my data thanks to this which did bring up my launcher normally. Thank you SiegeWeapon!
EDIT: I changed my password (again) and got logged in.
I am still not able to log in. It WILL NOT take my login information. I just changed my password yesterday when all this started so there's no way it has expired. This is driving me absolutely batty.
SnowyCascades
New Novice
14 days ago
I had to contact EA to get it sorted.

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400 - Bad Request

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