There are loads of file types swimming around our computers at any given time — most of which exist to supplement the programs we use or play (or allow them to function in the first place). The most ...

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 ...

We’ve all seen mysterious .dat file attachments in our inboxes from time to time. In most cases the .dat attachment originates in Microsoft Outlook, which produces outgoing messages using a slightly ...

Letter Opener converts winmail.dat attachments on the fly, so you can actually see and use the attachments the sender intended you to have. [Editor’s note: The following review is part of Macworld’s ...

The Tokens.dat file in the Windows operating system is a digitally signed file, which stores most of the Windows and Office activation files. All files together have a digital signature that prevents ...