400 - Bad Request

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 :)

Senna444​  You might need to contact EA customer support for help on this one.  I've read comments from a few users over the years that they had to get support to fix or unlock their accounts in situations like this, and if that's the case for you, there's nothing you can do on your own to address the issue.

If you don't get anywhere with support, let me know.

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 ?

DelancyMars​  I've merged your post with another one about the same error.  Please follow the steps the original poster listed in their reply.

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 launcher
• Used Repair on the EA launcher
• Uninstalled and reinstalled the game
• Restarted my computer
• Cleared 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​  Great to hear, and thanks for all the extra info.  I'm sure you won't be the only one who has to jump through these extra hoops.

Moose70​  Does your computer run Windows or macOS?  If you have a Mac, please use this thread:

The Sims 3 Mac Error Downloading Content | EA Forums - 11137978

If your computer runs Windows, are you getting the HTTP Status 400 error in the original post?  The "Error downloading content" issue has multiple causes, so I don't know whether the steps above would help if you don't also have the launcher error.  But you can try them anyway. 

Yes, I'm having issues with launcher downloading Roaring Heights I just bought last night. It keeps saying "There was an error while downloading content. Please see log for details."  But the log says server error??  I don't know what to do. 

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 🫶

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.