Project Folder Already Exists Dialog Box
While a project was being created, a folder name was specified that already exists.
The Project Folder Already Exists dialog box suggests an alternative name. You can accept it or type another name.
New projects are created in their own unique folder. It is possible to create a new project in an existing folder with the New Project in Existing Folder project template (found in New Project dialog box).
New Project in Existing Folder Template | Creating Web Projects