Windows File Explorer defaults to a simple view of the files on your machine. You can change it to display details by default with a few steps.
DAT files are used by many different applications. To know what to do with a DAT file, you need to know what application created it.
Windows Explorer tries to help by hiding some information. Unfortunately, that opens a hole that hackers can use to fool you.
This file does not have a program associated with it is a common error message when Windows doesn’t know what program is used to open a file. I’ll look at what that means, and step you can take.