What is the ExtensionActivityEdge file? Why does it take so much space in Windows 11/10? Is it safe to delete this file? Read ...

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 ...

You're probably aware that most files have an extension such as TXT or EXE after the file name, even though these are not always displayed in Windows. File extensions are how Windows knows what to do ...

I was all set to put this “Windows Explorer Explained” series to rest for a while, but then reader Martin wrote in with a question that comes up a lot: in Windows 7, how do you reveal the hidden file ...

Windows only: While Windows Explorer can sort files by type, by default it doesn't display or sort files by extension in a separate column—but the Extension Column add-on does just that. Install this ...

Table listing every Windows file type that has or can be used maliciously Download this Microsoft Word document table listing over a 100 file types/extensions that can be used maliciously. Download ...

Windows shortcuts (LNK files) can hide more than they show. Keep your system secure by protecting yourself against LNK files vulnerability.

Microsoft said Thursday that it will introduce new XML-based file formats for its Excel, PowerPoint and Word applications when the company launches its Office 12 software package next year. Company ...

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside. However, [PortalRunner] has ...

Last week I covered some basic file management tips in “Windows Explorer Explained: Tips for Newbies“–and the article was so popular that I figured I should just keep going. So this week I’ll stick ...