doc extension, and the Save As Type control also displays. Notice that this Word filename now displays the. For example, the Filename and Save As Type controls will display the filename and the extension, as shown below. Once you display extensions via Windows, Office will display extensions as well. Now, you might be wondering what all this has to do with Office.

In the Folder Options dialog box, uncheck the Hide Extensions For Known File Types option.Choose Folder Options from the Tools menu and click the View tab.(You can use any method for launching Explorer.) Choose My Computer from the Windows Start menu.That means it contains instructions that Windows runs when you double-click the file. exe extension is particularly dangerous because it's an executable file. You'd verify its contents by contacting the sender if you had any doubt. (The last extension is the only one that matters.) Would you open it? Most likely, you wouldn't. This time, your system displays extensions and you can see the file's full name is Employees.exe or even. Okay, now that's a bit macabre, but play along for a moment. You don't know what type of file it is, but you just updated your virus protection software, so you know it's safe, right? You double-click it, and your computer world goes dark. Let's suppose you receive a file named Employees as an e-mail attachment.

No antivirus protection guards against all viruses all the time. The sad truth is, every day a new virus strikes somewhere. Of course, you should have antivirus protection, and I'm sure you update it often, perhaps even every day. Viruses, Trojans, and other evil stuff carry information bent on destruction. Unfortunately, not all files are bearers of benign information and good will. You don't need to know a file's type to use it. You double-click a file and Office knows which application to open. Windows and Office make it easy to work in extension ignorance. Seeing extensions might not matter most of the time. The following lists contains the most popular Office application extensions: Displaying the extension gives you instant knowledge: Employees.doc is a Word file Employees.mdb is an Access file and so on. For example, the filename Employees could be anything. The extension tells you the file's format. An extension is the three-character suffix at the end of a filename. By default, Windows doesn't display filename extensions.

Do file extension