@kyungss88 To cover a few possibilities at once, please create a new admin Windows account and try playing there. Make it local, as in, don't link it to your Microsoft account or any email address. You'll be able to open Sims 3 without reinstalling anything.
If you have the same issue in the new account, please uninstall Sims 3 using Revo Uninstaller (the free version is fine). I wrote this guide for Sims 4, but the process is the same:
Make sure you rename the Sims 3 folder that contains your saves so Revo doesn't flag it for deletion. I would suggest testing first in the new Windows account, again, just to be thorough.
I’ve managed to do this and the login error is not there anymore.
But my CC is not on this new account so is there a way to transfer it? or do I have to manually download them again?
@kyungss88 Anything you want to transfer between accounts, you can drop in C:\Users\Public, which is accessible from any account.
If you'd like to try to fix the issue in your main account, try clearing Edge's Internet Explorer-mode data. The launcher stores some data there whether you use Edge or not.
You can also clear some Windows temp files:
Whether you want to pursue this is entirely your choice. There's nothing wrong with simply using a new account if that's what you'd prefer to do.
currently having the same issue I deleted my Sims 3 because it was having so many issues after EA decided to bring back Sims 2&1. My installed worlds in Sims 3 are all missing and when I try to start a game it gives an error saying it strongly recommends that I restart because "sunset valley.world" is having an error and every other world. I found some world files and tried downloading and putting them in where the files should be in installed worlds and once again I have that same error code. Then I tried putting those files in the Gamedata/Shared/nonpackaged/Worlds and yet again same issue. Then I did what the forum says above, where I took my sims 3 file out of documents and onto my desktop and yet again there are no world files!!!! Is there any way we can get an update for sims 3 or some solution for this?
