Can't log into the sims 3 launcher

@Miomidon  Store content is encrypted, so it can't be shared between accounts.

Of course you need to use the launcher to install store content, but again, it's not normal for the launcher to require you to login.  Have you tried downloading into a clean user data folder yet?  Move your entire Sims 3 folder out of Documents\Electronic Arts and onto your desktop, open the launcher to spawn a clean folder, then try to download something.

If this doesn't help, is it possible that the copy of the Sims 3 base game, specifically the product key, is different in your store account than it is in your Origin account?  Like I mentioned, store content is encrypted, and it may be checking the product key tied to the installed game with the one on file in the store account.

@puzzlezaddict 

I have, all these things present the same problem which is this inescapable login screen. It isn’t a mismatched version of games as I only have one copy and have been able to download content in the past (like yesterday) so this login requirement is entirely new for whatever reason. It started happening when telling the store to download a few different items, managed to accomplish one item before popping up with the launcher request etc etc. The welcome splash screen on the launcher is also now blank. But I’m able to download the items I purchased elsewhere due to folks tired of this mess also and converted their files so they can be shared and function. Appreciate the assist but this is likely an issue EA has to deal with since there are a few of us who can’t seem to fix this through normal means.