Change Association This Time Sometimes you may want to open a data file with a different program. To open a file by choosing the application, see Win Open With.

What is the deal with those winmail. dat files? I get them in my email all the time, and nothing seems to be able to open them.

Many times when receiving mail attachments with the new Exchange-enabled Microsoft Entourage v.X from Windows users, you will get a winmail.dat file that is inaccessible under Mac OS X. Alan Sill ...

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 ...

What is Index.dat file? Where is it in Windows 11/10? Download free index.dat reader, viewer, analyzer. Learn how to delete index.dat file.

If your e-mail program does not support this particular blend of RTF, you’ll end up with that danged .dat attachment–and no easy way to open it. You have a couple of options.