Tips on opening a winmail.dat file, keeping seldom-used ink cartridges from drying out, and undoing an Undo.

If the DAT file you're trying to open is text, you can convert the file into text in the Microsoft Excel program by first saving it as a CSV file.

What is the location of NTUSER.DAT file? Can you delete the NTUSER.DAT file? How does it work? This post answers all these questions and more.

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 ...

Tokens.dat file in Windows 11/10 is a digitally signed file, which stores most of Windows activation files. Learn how to rebuild Tokens.dat file in Windows.