By default, the Windows operating system adds special metadata to all files you download from the Internet to an NTFS drive, which it considers as attachments. Later, when you try to open or execute the downloaded file, Windows 10 prevents you from opening it directly and shows you a security warning that the file originated from somewhere else and can be insecure. Let's change this behavior to get rid of this warning.
Every time you download an executable file from the Internet and try to run it, Windows 10 shows you a security warning. The message box says "The publisher couldn't be verified. Are you sure you want to run this software?". In case you are not happy seeing this message every time, here is how to disable it.