To make Notepad files always open in a new or separate window in Windows 11, open Notepad setting and change the 'Opening files' option.

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.

In the Notepad app, click on File > Open. When this brings up the File Explorer window, go to the hosts file location: C:\Windows\System32\drivers\etc.

Configure batch file to run as admin To run a batch file always as an administrator on Windows 11, use these steps: Open File Explorer. Click the New menu and select the Shortcut option.