CCleaner Professional

Overview

CCleaner has been the default first response to a slow, cluttered Windows install for a very long time. Its core job is straightforward: find the temporary files, caches, logs, thumbnails, crash dumps, installer leftovers and browser data that accumulate across a system, show you what it found and how much space it represents, and remove them on your instruction rather than automatically.

The cleaning scope is broader than the built in disk tools reach. Beyond the Windows temporary folders it covers browser caches and histories across the major browsers, application caches for a long list of installed software, the recycle bin, memory dumps, old prefetch data, log files and the leftovers of uninstalled programs. Everything is presented as a checklist so nothing is removed that you wanted kept.

The registry cleaner handles the other half of the accumulation problem: entries pointing at files that no longer exist, orphaned shared libraries, invalid file associations, broken shortcuts, obsolete uninstall records and dead startup references. It offers to back up before every change, and that backup is a single file you can restore in one step if something you rely on turns out to have depended on an entry that looked dead.

The tools section is where most of the practical daily use happens. A startup manager covering programs, scheduled tasks, context menu entries and browser extensions, a software uninstaller that works on entries the standard control panel refuses, duplicate file finding, drive wiping for free space or entire disks, disk analysis by file type, and a system restore point manager. The unlocked tiers add scheduled automatic cleaning, real time monitoring that prompts when junk accumulates, and automatic browser cleaning on close.

Key Features

• Cleaning across Windows temporary files, caches, logs, dumps and installer leftovers
• Browser cache, history and cookie cleaning with per site cookie retention
• Registry cleaning with an automatic backup offered before every change
• Startup manager covering programs, scheduled tasks, context menus and browser extensions
• Software uninstaller that handles entries the control panel refuses
• Duplicate file finder with filtering by name, size and content
• Drive wiper for free space or whole disks with multiple pass options
• Disk analyser showing what is consuming space by file type
• Scheduled automatic cleaning and real time junk monitoring
• System restore point management from within the application

What Changed in This Build

• Support added for the current browser versions and their cache locations
• Faster analysis pass on drives with very large numbers of small files
• Registry backup and restore flow simplified into one step
• Startup manager now surfaces scheduled tasks more clearly

System Requirements

Processor	Any x86 or x64 processor
Memory	512 MB
Storage	100 MB
Operating system	Windows 7 or newer
Permissions	Administrator rights for system wide cleaning

Release Details

Full title	CCleaner Professional
Version string	6.41.11567
Publisher	Piriform
Category	Utilities
Licence	All tiers unlocked
Platform	Windows 7 through 11, 32 and 64-bit
Interface language	Multilingual, 45 plus interface languages
Archive size	84.6 MB
Mirrors	4 active, all reporting online
Listed	refreshed 8 weeks ago, checked again 40 minutes ago

Installation Notes

• Read the analysis list before running the clean. The defaults are conservative but browser cookies and saved sessions are easy to remove by accident.
• Always accept the registry backup offer. It costs nothing and it is the only way back if something you use depended on an entry that looked orphaned.
• Do not schedule aggressive automatic cleaning on a machine where someone else relies on saved browser sessions.

Before You Start

Read the notes above before running setup. Most of the problems people write in about are covered there, and almost all of them come down to an older version of the same software still being installed, a graphics driver that predates the release, or a security suite quarantining part of the package mid install.

There is no archive password on this or any other entry in the library. If something you downloaded elsewhere claims to come from here and asks for one, it did not come from here. Nothing on this site is behind a survey, a shortener or a countdown either.

If the entry does not match what the page describes, say so on the contact page and include the version string from the release details table. Reports naming a specific version get checked first because the checker can reproduce them straight away.

Frequently Asked