Users typically seek out repacked versions of CCleaner Professional to access advanced utilities without paying the annual subscription fee. Some of the locked features that drive this demand include:

In the warez scene, a is not simply a cracked .exe file. It is a modified version of an original software installer that has been compressed, altered, or bundled with additional components. Repackers (individuals or groups) typically take the official CCleaner Professional installer and use tools like Inno Setup, NSIS (Nullsoft Scriptable Install System), or WinRAR to create a new package.

Advanced browsing history cleaning.

A "repack" version of CCleaner Professional refers to a modified, unofficial installer that typically has the activation/licensing requirements removed (cracked) or has certain features pre-configured.

Analyzes your PC and recommends quick fixes for performance and security.

In short, you are accepting substantial security risks for a product that works worse than the free version.