There probably LOTS of copies of this file. I have 138 of them on my C:
drive and another 21 on my D: drive. At some point, you configured
Explorer to display hidden files or 'protect operating system files'.
Desktop.ini files are normally Hidden files.
If you customize a folder you will have a desktop.ini for that folder.
The desktop.ini is the place where the customizations are stored.
Like a custom icon.
If a folder is a system folder the desktop.ini will have info for that.
Too much info to go into here.