New installations of Windows hide all file extensions, except for Windows components, that would appear in Explorer or an application dialog box that displays file names. File extensions are ...

A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...

The default setting for Windows is to not display a file's extension, which is the last period in a file name followed by 2 or 3 letters. Therefore, when viewing files in Windows you would only see ...