If the DAT file is a video, you can open it with its associated video app. However, if you aren't sure what app it's intended for, VLC Media Player should be able to open it as well.

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 ...

The WebCacheV01.dat file in the C:\Users\username\AppData\Local\Microsoft\Windows\WebCache folder in IE11 in Windows 11/10 is said to be playing a similar role.

However, if you'd like to see it out of curiosity, here's how to find it: Go to File Explorer and browse to C:\Users\*YourUserName* If you don't see NTUSER.DAT yet, it's okay. Microsoft has hidden it ...

Another approach is to download a program that can translate the winmail.dat file. Several developers have created helpful programs that can open the files.

Now you may be looking at gibberish (binary data) but Wordpad (and Notepad) is benign and it is safe to use to open unknown files. Q. I have an IBM Thinkpad running Windows 98.

If you can’t convince the sender to use standard email formats, you also have a few options for reading these Winmail.dat-formatted messages. On the Mac, TNEF’s Enough, can open winmail.dat files.