Find the activation or "Add Product Key" section (often located in the settings or via a prompt when trying to use premium features).

Leo handed her a thumb drive with a backup. "I didn't find it," he smiled, shutting down the program for good. "I just reminded the computer who it belonged to."

By removing these files, the software promises to speed up the computer and, crucially, prevent the "full disk" errors that can cause system crashes or prevent the installation of new programs. When the trial version of such software expires, or when users wish to unlock advanced features like deep scanning or automatic scheduling, the software prompts for a product key. It is at this juncture that many users turn to the internet in search of free alternatives to purchasing a license.

Identifies massive files you might have forgotten about to help reclaim gigabytes of space.