Well, the fact is that Microsoft has not developed an official duplicate file remover yet. All the file finders and removers in the market today are all from third-party developers. In other words, you cannot find any official version of duplicate file remover in the Microsoft store.

There is "Duplicate Cleaner Free", which you can download from the Microsoft Store. https://www.microsoft.com/en-us/p/duplicate-cle... Feel free to ask back any questions.