Every file that we have saved on our computers has a particular extension. The file extension is added at the end of the filename followed by a dot (.). It tells the operating systems about the ...

Windows only: The built-in tool for dealing with unknown file types in Windows simply doesn't work. OpenWith.org does, and it points you, or your less free-software-savvy friends, to downloads that ...

9 to 5 Mac offers a few screenshots from Apple's forthcoming Mac App Store and the related Mac OS X 10.6.6 update, revealing a few tidbits of information about how the store will function. First, ...

Website WhatIsThatFile.com offers a simple, handy little interface that lets you type in an unknown filename or filetype and gives you as-you-type results. While we still do not cover ALL of them, we ...

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...

Mac OS X computers use a default application to open every file type based on its file extension. If you don't want to use the default application when opening a file, you can select "Open With" from ...

A .HAT file is used for different programs including games like Formula One racing, although it’s no longer actively used. But, if you do come across HAT files on your Windows device, here is how you ...

Most people are conditioned by now to not open unknown file attachments—especially file attachments on emails from unknown sources. Just in case you somehow missed the memo, though, there is a new ...

Unknown files have become one of the biggest security threats to organizations, catching the attention of C-suite officers. Highly-publicized data breaches at brands like Target, Home Depot and Sony ...