You can open .DAT files that contain text, with text editors, like Notepad, Notepad++, VS Code, etc. But it is not possible to know what contains in a DAT file.

We show you how to open files with no extension in Windows 11/10. You can try these tricks or use one of these free software or online tools.

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...

How to view file name extensions in Windows Vista and Windows 7 Close all programs so that you are at your desktop. Click on the Start button.

Open File Explorer with several tabs at once Using a script to open File Explorer with several tabs is a bit whacky, so prepare to trade one convenience for another.