How to enable the confirmation dialog for deleting in Windows 8
Then right-click the recycle bin icon and select Properties (Properties) on the shortcut menu.
In the dialog box you need to activate the option Display delete confirmation dialog, and then confirm the changes by pressing the Apply button.
Now, when you delete a file(s) to the trash, the operating system will ask if you really want to do it.
That’s all that was required to do, and remember, if you want to delete the file, bypassing the recycle bin, you can always use Shift + Delete on the keyboard.