CCleaner cleans out the Registry to help prevent errors from occurring, which can help it run faster.

Over time, the Registry can become cluttered with missing or broken items when installing, upgrading, and uninstalling software or updates. Why CCleaner cleans the Windows Registry: You can read more about the Windows Registry on Wikipedia. The Windows Registry is a set of files that contains settings for your Windows PC, such as what program to use to open HTML files, when your antivirus program should run, or what desktop background you use. To skip to instructions for Registry > Registry Cleaner, go to Clean your Registry with CCleaner for Windows further down this page. Screenshot for Tweaking.This page explains what the Windows Registry is, why CCleaner cleans it, and how to clean it.

Support future free repairs with the Pro version Since the program continues to add new features, has no third-party software, no nags, no usage, or time limits, this truly is a breath of fresh air. Occasionally you might have to change back some settings you have modified, but it’s worth it. Booting into safe mode and running this Windows Repair can solve these problems, and everything running properly again. We’ve seen this happen hundreds of times. While there are many tools to help remove the infection, you will often have issues left over like a disabled Action Center, firewall, anti-virus, or even worse, internet connection. Malware and poorly installed programs can modify your default settings resulting in your machine working poorly. While there are a lot of tools out there to help remove an infection. Widespread use for Windows Repair is after a malware infection. Windows Repair is an all-in-one repair tool to help fix many known Windows problems, including registry errors and file permissions.

Reset registry repair tool