Font files received as .dat files

Let me guess... you received them by email, right?

The quickest resolution is to have the sender resend them but they need to first put them in a compressed zip folder. They can use the built in utility in XP or some third party program such as WinZip.

.DAT files can be opened by NotePad to see the contents. But you'll find that to be of no use. You could try to rename the file extension from '.dat' to 'ttf' but I doubt that will work.
The issue has to do with how the attachments were sent.

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