I´ve been looking for a Harry Potter world and the few I found seams to have problems when you try to play, except for this one:

http://sims3germandownloads.blogspo...otter-welt.html

https://www.youtube.com/watch?v=0RHU0qGgLJs

The links to download are broken and the people who posted about this world didn’t mention the creator’s name.

Does anybody know where can I find it? Or know the creator’s name?

The links are dead, the creator is named Maxi. Here you go for his sims3 account https://mypage.thesims3.com/mypage/Maxi4747
His studio is almost empty and inactive since 2012.
There are a handful Harry Potter themed worlds and I know they will be different.

I don't know if it helps, but I found this world, too. Maybe it's interesting for you, too. It's called Hogwards forever
https://forums.thesims.com/en_US/di...warts-architect



















A nice video overview you find here http://www.youtube.com/watch?v=m3K-19m5t7Q

The download doesn't work any more, too, but someone else has posted a working download, here you go http://www.mediafire.com/file/enm04...er_2.0.rar/file

Thank you very much for your answer! Hogwarts Forever looks amazing but crashes, I kept looking and I found it, there is a populated and revamped version of this world made by KarilynMonroe2 in the exchange page:

https://www.thesims3.com/assetDetai...ssetId=9352991#

The description says the creator is vssdgames, I googled his name and found the forum thread where he posted it:

https://forums.thesims.com/En_US/di...st-post-updated

It seams he disappeared and he never shared it through the exchange but SimmingLena uploaded it with an updated save file:

https://app.box.com/s/2bkvh3yw3x3hamv3tr21

I am sorry to hear that the game has crashed, when you load it .
But at least you were successful with your investigations .
Have a nice weekend and stay safe and healthy .