Windows XP turns off the file extensions of known file types by default. For security reasons it's advised you turn file extensions back on. Many viruses are sent with a false 2nd extension, such as funnyjoke.txt.vbs. Windows will hide the extension .vbs (a very common virus extension) and you will only see funnyjoke.txt. When the file is opened the virus is run. To turn file extensions back on, open My Computer, and then go to the Tools, then folder options, and then view. From the list uncheck 'Hide file extensions of known types' and press ok all the way out. Every file that is on your computer ends in a period followed by a three-letter extension. This extension tells Windows what type of file it is. For example you have two files home.jpg and home.txt. Windows knows that the file extension .jpg means it is a compressed image and Windows will open it with an associated program. Similarly, it knows the .txt file is a text file and will open it with notepad. Windows does not always automatically know what program should open a specific extension. For example, if you do not have Word Perfect installed, your computer may not know what program to use to open the file type that Word Perfect uses (.wpd). If this is the case it will prompt you to select a program to try and open it with. In this situation if you selected Microsoft Word from the list it would most likely be able to convert and open the .wpd file in Word. Windows XP turns off the file extensions of known file types by default. For security reasons it's advised you turn file extensions back on. Many viruses are sent with a false 2nd extension, such as funnyjoke.txt.vbs. Windows will hide the extension .vbs (a very common virus extension) and you will only see funnyjoke.txt. When the file is opened the virus is run. To turn file extensions back on, open My Computer, and then go to the Tools, then folder options, and then view. From the list uncheck 'Hide file extensions of known types' and press ok all the way out. Source.


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Last Modified: April 23, 2016 @ 9:12 am