When you use the Direct download utility to download the data of a user with the username ending with a period (.), the folder cannot be accessed and it cannot be deleted. The following error message displays:
This is a default Windows behavior. Windows do not allow to create or open a folder with a period at the end of a file/folder name. Windows explorer does not identify it as a folder. The Windows shell and user interface does not support such names.
To open these folders, rename the folder first. As Windows do not identify the folder name ending with a period (.), use file explorers, such as WinRAR, 7zip that do not use Windows Explorer to rename the folder. Once the folder is renamed it can be easily accessed.