CRDOWNLOAD files are temporary files created by Chrome when you download a file from any Chromium-based browser. Learn how to open it.

When it comes to converting file extensions on your iPhone, don't worry about downloading a third-party app when you can make the changes yourself.

BearPup sometimes wants to open a file in one program, and other times open it in another. He asked the Answer Line forum for an easy way to do this.

Red Eye Rose received a file with a strange extension. She doesn't know into what program she should load it. Neither does Windows.

Microsoft is making it easier to change your default file associations by adding a new search feature that lets you quickly find the extension you wish to modify.