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 straightforward ...

Q. I received e-mail from a relative that says it is in a winmail.dat file. When I try to open the file, I get a message that says something like: "You are attempting to open a dat file. They are used ...

Q. I sometimes receive e-mail messages with a “winmail.dat” file attached that I cannot open. Why does this happen, and what can I do to fix it? A. The winmail.dat file usually appears because various ...

If you live in a world where you get email from Outlook users, and I think most of us do, you probably see the dreaded winmail.dat file on occasion. Outlook compresses all of its attachments together ...

Kavindu installed KMPlayer, then discovered that more file types opened in KMPlayer than he wanted. When you open a data file, Windows uses the file’s extension (such as .docx, .mp3, .jpg) to see in ...

Windows associates data files with applications so that the appropriate program launches automatically when the icon or name of the data file is clicked. For example, if a GIF image is associated with ...