File Types and Extensions

File Extension Error Welcome to WhatsAFile.com a File Types and Extensions resource. We are dedicated to helping you "the end user" with your various file extension woes and issues.

With over 30,000 known file extensions it's virtually impossible for any human to know them all. WhatsAFile is a question and answer based extension database that's user powered. You ask.. we answer. once resolved the information is posted to the world wide web to help other people with the same errors. We are kind of like the Fixya of files.

Most Requested

Here are our most requested file extension. Maybe what you need is here. If not try searching using the form on the bottom right. .dat files, .dmg file, zip files, .rar file, .MSI executable file, .exe file type, .flv files, .cab, .doc, .docx word files, .xlsx files, .xls excel filetype, csv files, .bak type files, .ppt files, .wav files, .dll file, .wps filetype

New Questions/Answers

XP File Extensions

XP File Extensions If you want to know how to open a file, then you need to know the extension. Windows hides that from you by default. Let's unhide it really quick so you can know what type of file it is you are working on.

  • Double Click the My Computer icon on your desktop.
  • Choose Tools then Folder Options from the menu.
  • Click the view tab.
  • Read Full Article


Vista File Extensions

Vista File Extensions Showing the file extension in Windows Vista is pretty easy too :) Windows likes to hide the file extensions so that they don't confuse basic users. Showing the known file types also allows users to change the filetype and therefore the application associated with the file. Lets go ahead and change it know.

  • Click "Start" button, then Settings, and then Control Panel
  • Click "Folder Options"
  • Click the tab from the choices at the top.
  • Read Full Article