The identical file is a serious problem. A deep scan shows you how much space is eaten up by duplicate content, yet with different file names and locations. These records are scattered all over your hard drive, consuming tens of GBs of storage. Your system runs slower due to insufficient storage space for programs. Besides, you daily spend around 20 minutes organizing files and folders.
Your PC starts accumulating these files through various means. Both operating system and user actions have to be blamed. Downloading new files, copying files from someone’s USB flash drive, result into this mess. Besides, when you upgraded to Windows 10 from an earlier version, your PC moved all old documents and files to system-organized folders resulting into mass duplication.