If your Excel files are opening in Notepad on Windows PC, here's how you can reset the settings to make .xls, .xlsx, etc files open in Excel.

How to Open a .DAT File. .DAT is a commonly used file extension for saving generic data records. The information contained within a .DAT file depends on the program used to create it, but it will ...

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

If you're having trouble opening a DAT file, I'll show you a simple and free way to do it. This method works on both Mac and PC. Just open your browser and go to winmaildat.com. It's a ...