I extract an archive that have files like: "hi." (there exist a '.' but no extension). Now I cannot open and delete dat files and every folder that contain that files (gives the error that the file/folder does not exist!)

How can I delete them? (I am using windows 10)

marked as duplicate by Pimp Juice IT, music2myear, BlueBerry - Vignesh4303, G-Man, karel Oct 27 '17 at 8:35

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