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Version History

v6.21.10918 (14 Feb 2024)

Taking the hassle out of PC maintenance 

  • New Software Updater that supports more programs than ever before and features an improved interface now becomes available to all paid users. 
  • Latest improvement to Driver Updater library brings an expanded database with 70 million drivers. 
  • Enhanced Performance Optimizer that helps you turn off unused programs to improve system performance now supports apps installed from the Windows Store and features improved UI.   
  • We improved the cookie cleaning in Chromium browsers. 
  • Health Check will now ask you to choose which running programs you want to close so Software Updater can scan them. 

Fixing bugs and other improvements  

  • We’ve corrected the status text in Health Check, where cancelling an app update would appear as "Update failed" instead of “Update cancelled” in the screen with resolved issues. 


v6.20.10897 (17 Jan 2024)

Taking the hassle out of PC maintenance 

  • We’ve improved cookie cleaning for Chromium browsers. 
  • We’ve added new cleaning rules to remove bookmarks backup files for all Chromium browsers. 
  • In the new version of Software Updater, you can now close the dialog box that shows the list of running programs to leave them running and omit them from the scan.  
  • We’re continuing to test the new version of Software Updater via Health Check with a growing set of users.  

Fixing bugs and other improvements  

  • We’ve resolved an issue where bookmark backups from Opera (GX) were not detected on Windows 7 and 8.1. 


v6.19.10858 (13 Dec 2023)

Taking the hassle out of PC maintenance 

  • Our support tool can now understand your cleaning rules to help resolve support queries more quickly. 
  • We’re continuing to test the new version of Software Updater via Health Check with a small set of users. The new version now asks users to close running applications so we can update them, and sorts the recently updated software by date. 

Fixing bugs and other improvements  

  • The portable version of CCleaner no longer crashes after starting. 
  • We resolved an issue whereby users with the UI in certain languages did not see the Start Button on the Welcome Screen. 
  • We implemented several backend optimizations and improvements for better control over new feature releases. 


v6.18.10838 (23 Nov 2023)

Taking the hassle out of PC maintenance 

  • We have initiated the roll-out of the new Software Updater tool which will also be included in the Health Check and brings a larger app database. A small set of users might experience the new Software Updater in the app.  
  • We extended testing of the new Health Check flow to more users, which improves guidance during the cleaning and optimization steps. 
  • We expanded our cleaning to our Customer Support tool. 

Fixing bugs and other improvements  

  • We resolved an issue that might cause the unregistering of CCleaner Professional for some users.
  • We optimized the UI on the overview screen and for Software Updater and Driver Updater post-update screens. 
  • We resolved an issue when Software Updater might get stuck during the update of multiple apps simultaneously.  
  • We resolved several licensing issues related to refunds and license expiration. 
  • We improved the handling of uninstall parameters in the Uninstaller feature. 
  • We implemented a fix to component permissions to prevent potential misuse. 


v6.17.10746 (18 Oct 2023)

Taking the hassle out of PC maintenance

  • We have improved junk cleaning for more than a dozen apps including Adobe Creative Cloud, Garmin Express, iTop Screen Recorder, µTorrent, OpenVPN Connect, SyncToy, TeamViewer, Terabox, VideoPad Video Editor, VMware Workstation, or Youcam.
  • The new Driver Updater engine is more stable and better performing, and its database now includes more than 70 million driver updates.

Fixing bugs and other improvements

  • We resolved an issue where some customers couldn't input the ‘@’ symbol into the email field when activating CCleaner.
  • We updated the pop-up warning that displays when you try disabling Smart Cleaning, to make it clearer.
  • We also implemented minor improvements in user interface, stability, and security.


v6.16.10662 (13 Sep 2023)

Taking the hassle out of PC maintenance 

  • Limited testing of the new Health Check user experience to better guide you through the cleaning and optimization steps. 

 

Fixing bugs and other improvements 

  • We resolved an issue that prevented some users from auto-updating CCleaner or activating their licence.  
  • We fixed an issue where a crash could occur when the scheduled cleaning was starting.  
  • We fixed some text alignment in the UI for Dutch localization. 


v6.15.10623 (16 Aug 2023)

Taking the hassle out of PC maintenance 

  • New cleaning rules for BlueStacks 5, GoToMeeting, Icecream Screen Recorder, iTop PDF, NordPass, and Proton VPN. 
  • Updated cleaning rules for VMware Player and VMware Horizon Client.

 

Fixing bugs and other improvements 

  • Driver Updater UX improvements and minor bug fixes. 


v6.14.10584 (19 Jul 2023)

Taking the hassle out of PC maintenance 

  • We’ve further improved the troubleshooting assistant that helps you quickly identify and reverse a problematic driver update. 

 

Fixing bugs and other improvements 

  • Additional improvements in security and stability. 


v6.13.10517 (14 Jun 2023)

Taking the hassle out of PC maintenance 

  • Cleaning rule upgrade improves the cleaning of more than 30 applications including: 
  • Box Drive 64 Bit 
  • Corel PaintShop Pro 2021 64 bit 
  • GoodSync 
  • Google Drive & Google Drive Backup and Sync 
  • Nextcloud Desktop Client 
  • Plex Media Server. Plex Home Theatre application 
  • Skype 
  • TortoiseGit, TortoiseSVN 
  • Viber 
  • VMware Player, VMware Horizon Client 
  • VNC Viewer 
  • Windows Defender backup 
  • And others 
  • Further enhancements to smart cookie scanning in Health Check including: 
  • More frequently chosen websites for Cookie Allowlist. 
  • Website URL spelling validation and already saved bookmarks validation. 

Fixing bugs and other improvements 

  • Additional improvements in stability, accessibility, and security – digital signature algorithm verification. 
  • OperaGX bookmarks can now be correctly imported. 
  • Fixed a bug that could show paused driver updates in the Skipped category instead of the Paused category. 
  • The appropriate message “No Bookmarked websites yet” is now displayed when a user with no bookmarks clicks on "Import cookies" in the Health Check Cookie Allowlist. 


v6.12.10490 (18 May 2023)

Taking the hassle out of PC maintenance 

  • Immediately after updating drivers (or after restarting your PC following an update), a report now highlights which drivers have been updated and any that may potentially cause issues – enabling users to revert some or all updates, or schedule a reminder to revert later. 

Fixing bugs and other improvements 

  • CCleaner now loads faster thanks to app startup optimization. 
  • Fixed issue which, in some cases, resulted in the incorrect message "Not supported product". 
  • Customize, Privacy, Space, Speed, and Security screens in Health Check now resize correctly according to the current window. 


v6.11.10455 (02 May 2023)

Taking the hassle out of PC maintenance 

  • We’ve made Health Check cookie scanning smarter, so it preserves cookies for your favorite, commonly used websites in the same way as Custom Clean. 
  • New ‘My account’ area has a more modern look and feel with quick access to subscription settings, cleaning schedule, recommended products, and CCleaner support. 
     

Fixing bugs and other improvements 

  • Improvements to users' post-purchase onboarding. 
  • Fixed issue when TeamViewer cleaning could restart the service.

Patch update 6.11.10455

  • We have released a hotfix for version 6.11 that fixes CCleaner crashing when TeamViewer is cleaned. Crashing could have occurred in either Custom Clean or Health Check.


v6.11.10435 (24 Apr 2023)

Taking the hassle out of PC maintenance 

  • We’ve made Health Check cookie scanning smarter, so it preserves cookies for your favorite, commonly used websites in the same way as Custom Clean. 
  • New ‘My account’ area has a more modern look and feel with quick access to subscription settings, cleaning schedule, recommended products, and CCleaner support. 
     

Fixing bugs and other improvements 

  • Improvements to users' post-purchase onboarding. 
  • Fixed issue when TeamViewer cleaning could restart the service. 


v6.10.10347 (15 Mar 2023)

Taking the hassle out of PC maintenance 

  • We have expanded cleaning with 23 new options, especially for popular apps in Windows Store and social media apps (e.g., Douyin, YouPlay, Facebook Messenger), video editing (Video Editor Master, ClipChamp), and Mozilla Firefox. 
  • The new Driver Updater engine brings more stability and performance and now supports more than 50 million available driver updates. 
  • A new UI and FAQ section for Driver Updater now makes it easier to understand how to keep drivers up to date and troubleshoot any unexpected behavior after the update. 
     

Fixing bugs and other improvements 

  • Stability improvements in the areas of connection establishment.  
  • Fixed occasional crashes during cleaning or logging. 


v6.09.10300 (14 Feb 2023)

Taking the hassle out of PC maintenance

  • In Software Updater, we've added 50 software titles to our update library to keep more of your installed apps up-to-date

Fixing bugs and other improvements

  • We fixed an issue where crashes could occur when registering a license
  • We upgraded our developer toolkit to provide our developers with enhanced debugging, testing, and code analysis capabilities to improve code quality and reliability

Coming soon

  • A new welcome screen which helps you immediately run your favorite tasks and explore more features
  • A UI update with new FAQ section for Driver Updater
  • Driver Updater engine and performance improvements


v6.08.10255 (18 Jan 2023)

Taking the hassle out of PC maintenance

  • In Driver Updater, we've added some new information next to the progress bar to give you realtime information when installing new updates
  • You can now see what stage each driver update is at

Fixing bugs

  • We fixed an issue where crashes could occur after cleaning a closed browser
  • In Driver Updater, we fixed alignment issues with text in some languages
  • In Software Updater, we aligned how errors are shown


v6.07.10191 (14 Dec 2022)

Simplifying the app

We've optimized the app to start up more quickly

Taking the hassle out of PC maintenance

In Driver Updater, we've added a new 'Pause Updates' option to give you more control over which devices get updated

  • You can pause all future updates for a driver from its 'Details' screen
  • Pausing updates for a device removes it from the 'available updates' counts
  • The new flow has 'confirm' steps that explain what happens when driver updates are paused and skipped
  • All devices in the 'paused' state are grouped together at the bottom of the drivers list
  • All skipped driver versions are also grouped together in this list
  • We've added some hint panels that give more information about the 'paused' and 'skipped' groups
  • The new 'Pause Updates' and 'Skipped Versions' experiences fully support the NVDA screen reader

In Driver Updater, we've also made some other UX improvements:

  • We've made it easier to access the Driver Details view
  • Rows in the driver lists now highlight when the mouse cursor moves over them

Fixing bugs

  • In Health Check, we fixed version information not showing for software updates
  • In Driver Updater, we fixed crashes that could occur during an update or when closing CCleaner
  • In Software Updater, we fixed Google Drive showing "Unknown publisher"


v6.06.10144 (16 Nov 2022)

All-new cleaning for Windows 11

  • Windows 11 Widgets: safely removes logging data, temporary JavaScript files, and images from various widgets such as weather & news feeds. 
  • Microsoft Teams: 13 different types of cached data, log files and other temporary files
  • Skype: removes cached data
  • Microsoft News: cleans up temporary browsing files (images, HTML data) and cookies
  • Windows Defender: removes log files which are unnecessary for the average user 
  • OneDrive for Windows 11: clears out unneeded cache files
  • Temporary files: tweaked for Windows 11
  • Microsoft Clipchamp: cleans this video editor on Windows 11

Other cleaning improvements

  • Windows Explorer: detects and removes outdated Windows Search data, log files, and shortcuts to recently used files
  • Start Menu Notifications: new rule which removes Live Tiles from your Start Menu
  • Microsoft Family Safety: removes temporary files & folders
  • Chrome and Opera: more extensive cleaning definitions
  • Slack: additional cache & log file cleaning
  • AnyDesk: delete old chat logs, trace files, as well as cached png and icon files
  • RealPlayer: detects and removes JPG and thumbnail files, cache files, and outdated index files from all versions of RealPlayer SP, 15, 16, and Cloud
  • Resso: new cleaning for this music streaming app

Cleaning for apps installed via Microsoft Store

  • McAfee Personal Security AntiVirus
  • Pinterest
  • Video Compressor: Resize & Compress Video

Fixing bugs

  • Fixed rare crash during app upgrade process
  • Fixed rare crash during app update process
  • Drivers no longer shown as 'Skipped' if updated by another app
  • Driver version still shown as 'Skipped' if driver downdated by another app


v6.05.10110 (24 Oct 2022)

Taking the hassle out of PC maintenance

We’ve stopped various games and other apps from accidentally being put into ‘sleep mode’:

  • Riot Vanguard/Valorant
  • Logitech MX Master
  • Alienware Command Center
  • Winzip Courier
  • AnyDesk

Simplifying the app

  • We’ve made minor updates to the look and feel of some of our screens to make them more consistent and easier to read 
  • In Performance Optimizer, we’ve added text to indicate when another app is preventing CCleaner from putting an app into ‘Sleep mode’
  • We’ve added a handy link to Premium Tech Support for CCleaner Premium customers  

Fixing bugs

  • We fixed several types of uncommon crash when launching CCleaner
  • We fixed a write error that sometimes occurs during the update process
  • We fixed an issue where programs in the Performance Optimizer ignore list remained after uninstalling and reinstalling CCleaner

Keeping you safe

  • Our commitment to keeping the app secure means we frequently close off potential security issues, even if minor
  • In this release, we have focused on addressing issues found through expert penetration testing


v6.04.10044 (20 Sep 2022)

Version 6.04 brings various usability improvements to CCleaner. In Health Check, the scan now ignores files that were modified less than a minute ago, meaning that, after we've cleaned, the app won’t communicate that a PC is “under the weather” when it’s not!

This release also includes some minor usability tweaks to the new Cleaning Schedule interface. Plus, we have improved our error reporting to get better information if the app crashes, so we can address critical issues sooner.

Taking the hassle out of PC maintenance

  • In Health Check, the scan now ignores files that were modified less than a minute ago
  • We’ve made some small usability tweaks to Performance Optimizer and Cleaning Schedule

Fixing bugs

  • Fixed CCleaner re-enabling Windows System Restore on every launch; going forward, System Restore will only be activated if enabled via Driver Updater
  • Fixed all drivers disappearing from lists after closing 'Restart Now' popup
  • Fixed an issue causing backups to be removed due to an access rights issue
  • We now require restarts for reverting as well as updating certain drivers (fixes issue where the scan gets stuck at 0%)
  • We’ve fixed some visual issues that occur when Windows is scaled above 100%
  • We’ve added a reporting tool that will help us to identify the most common crashes and their causes



v6.03.10002 (22 Aug 2022)

Giving a PC a regular check-up with CCleaner keeps it running smoothly. In version 6.03, we have updated and expanded our scheduling tools to make it even easier to stay on top of this maintenance.

We’ve redesigned the scheduling interface to make it simpler to set up automatic cleaning in CCleaner Professional. It now notifies you before cleaning starts and then again once cleaning is complete to confirm the results. A handy switch also allows scheduled cleaning to be paused (while keeping the settings saved). Using the free version? Set a reminder to clean instead!

Alongside this change, the interface for Driver Updater has been improved to make it clearer how long a driver update is taking.

Expanding our cleaning

  • We've added new cleaning for Microsoft Store installations of Instagram, Facebook, and  iCloud
  • We've improved cleaning for Store installations of WhatsApp

Taking the hassle out of PC maintenance

  • New and improved Cleaning Schedule controls! (Options > Cleaning Schedule)
    • All-new cleaning reminders!
    • Setting up cleaning reminders/automation is simpler than ever!
    • Any existing cleaning schedule is preserved
    • Pause your cleaning schedule at any time without losing your settings
  • An upgraded Driver Updater experience!
    • The progress of driver downloads and updates is shown more clearly
    • Some improvements to driver-to-device matching

Fixing bugs

  • Fixed a rare crash when scanning for drivers
  • Fixed a rare issue that occurs when activating a license
  • We fixed an issue that would cause a loss of settings in CCleaner Portable
  • Screen readers are now more polite when reading “FAQ”


v6.02.9938 (20 Jul 2022)

CCleaner 6.02 brings new cleaning and usability improvements to our maintenance and optimization features. Performance Optimizer has had some updates to make it even easier to use. We’ve also made it more easy to track which driver updates are being skipped, and we've added more free cleaning for numerous popular Microsoft Store apps, including TikTok and Telegram. This cleaning is optional: you can control it in Custom Clean.

Expanding our cleaning

  • We've added new cleaning for Microsoft Store installations of:
    • TikTok, Telegram, Discord & Amazon Prime
    • Adobe Acrobat, Dolby access, Microsoft Sticky Notes, Lively Wallpaper
  • We've improved cleaning for Store installations of:
    • Microsoft Todo, iTunes, annd Amazon Music
  • We've stopped Health Check from cleaning Store installations of:
    • Telegram, Acrobat Adobe Reader and Discord

Taking the hassle out of PC maintenance

  • Skipped driver updates are now grouped in their own list

Helping you to keep your PC running fast and smooth

  • We’ve made various improvements to Performance Optimizer
    • It’s now clearer when an app is waiting for a Windows restart before it can be placed into Sleep Mode
    • Increased size of the program list so you can see more programs at once
    • Updated the mouse hover behavior on buttons and list rows to make your experience more intuitive
    • Added a helpful explanation of what to expect when you put your first program into ‘sleep mode’ 
    • Added confirmation text if the ‘Active/Sleeping Programs’ lists are empty
    • Added confirmation text once you've put your programs into ‘sleep mode’ (or ignore)

Simplifying the app

  • We fixed an issue in Health Check where ticks were not being displayed
  • We're working on improvements to how you manage your cleaning schedule — watch this space!

Fixing bugs

  • During uninstallation, CCleaner now only removes the files it creates from its install directory
  • Fixed default cookies not being set in some installers
  • Fixed a rare crash reported by one of our users

Keeping you safe

  • Our commitment to keeping the app secure means we frequently close off potential security issues, even if minor.
  • In this release we have focused on addressing issues found through static code analysis.

Note about CCleaner Portable

We have paused releases of CCleaner Portable while we resolve a compatibility issue. We aim to have this resolved in v6.03.



v6.01.9825 (20 Jun 2022)

CCleaner 6.01 brings even better cleaning, maintenance, and optimization to your PC. First, our new Performance Optimizer has some improvements to make it easier to use. Second, we've added more free cleaning for a number of popular apps present on the Microsoft Store, including iTunes and Netflix. This cleaning is optional: you can turn it on in Custom Clean. Third, Software Updater can provide updates to an additional 30 apps, taking its coverage to more than 150 popular apps! Finally, thank you to those who reported long loading times for CCleaner, this should be back to normal now in this release.

Helping you to keep your PC running fast and smooth

  • We’ve rectified the Driver Updater badge counter so it no longer shows the wrong number of drivers to update in some cases
  • We’ve made many quality-of-life improvements to Performance Optimizer:
  • We’ve optimized its own performance to use fewer resources
  • We’ve added a notification for  made it more obvious when an app requires a restart before it can enter or leave Sleep Mode
  • We’ve made some wording clearer
  • We’ve fixed some visual bugs 
  • We’ve fixed an issue that occurred when switching from non-admin to admin in Windows
  • We’ve added better error reporting so our engineers can fix issues more quickly

Expanding our cleaning

  • We've added cleaning for Microsoft Store installations of: 
  • Amazon Music, iTunes & Spotify
  • Netflix, Disney+ & VLC Media Player
  • WhatsApp
  • Microsoft To Do
  • Raw Image Extension
  • Trio Office

Taking the hassle out of PC maintenance

  • We fixed an issue where CCleaner took a long time to load if you have large driver backup files present
  • Software Updater now supports an additional 30 applications; including OpenOffice, Plex Media - Player and CPU-Z
  • Request more apps for Software Updater at ideas.ccleaner.com

Simplifying the app

  • New caret arrows in Driver Updater show that driver categories can be expanded
  • The Account menu, where you can manage your license and start a free trial, is now easier to find 

Keeping you safe

  • As part of our continued commitment to security, we’ve made various minor security improvements based on testing (penetration testing, static code analysis)
  • Updates like these are typical, preventative measures taken by all good software companies
  • One such example is that we've upgraded the version of OpenSSL we use for secure data transfer to the latest one (1.1.1o)

Note about CCleaner Portable

We have paused releases of CCleaner Portable while we resolve a compatibility issue. We hope to have this resolved soon.



v6.00.9727 (12 May 2022)

Helping you to keep your PC running fast and smooth

  • Added a new Performance Optimizer feature
  • Scans for apps that run in the background
  • Allows you to sleep apps that aren’t needed, reducing system load
  • Keeps apps asleep while not in use
  • Wakes apps up safely when needed by you or another application
  • Contains a guide and FAQ section
  • We fixed some bugs found during our feature preview test phase
  • You can read more about this feature in our blog post

Expanding our cleaning

  • Added cleaning of Windows Software Distribution logs
  • Added optional cleaning of Google programs backup files
  • Added optional cleaning of Apple programs backup files
  • Added optional cleaning of Steam backup files
  • Improved cleaning of Safari internet history
  • Improved cleaning of Chromium internet cache (JS files)

Taking the hassle out of PC maintenance

  • We’ve added 50 new apps to our Software Updater!
  • More to come this summer
  • Request an app at ideas.ccleaner.com

Simplifying the app

  • Added a helpful ‘Paste’ button into the License Key screen
  • Improved Account Menu display for high-DPI screens
  • Made some license registration errors more understandable
  • To avoid mishaps, CCleaner will always be installed to a /CCleaner/ folder

Making the app inclusive (Accessibility)

  • Our new Performance Optimizer feature has full support for NVDA screen reader
  • The Account Manager menu now works better with NVDA screen reader

Keeping you safe

  • As part of our continued commitment to security, we’ve made various minor security improvements based on testing (penetration testing, static code analysis).
  • Updates like these are typical, preventative measures taken by all good software companies.


v5.92.9652 (11 Apr 2022)

In this release, we’ve expanded cleaning for Edge, Firefox and Chrome and renamed some files for better clarity around what CCleaner is cleaning.

We’ve also released a preview of our new Performance Optimizer feature to a limited number of CCleaner users for their feedback. This new feature puts apps into ‘Sleep’ mode if they’re not needed to boost system performance.

Expanding our cleaning

  • We added cleaning of bookmark backups in Edge and Firefox
  • We expanded our Google Chrome ‘Metrics Temp Files’ rule to include Setup Metrics
  • We’ve renamed the ‘Windows SubSystems Temp Files’ rule to “Network Data Usage” to make it clearer that this rule removes historical, statistical data about your network usage.

Helping you to keep your PC running smoothly

  • We have released a preview of our new Performance Optimizer feature to a small number of users for their feedback
  • This new feature is not yet suitable for users of assistive technologies, but will be when fully released
  • We expect to make it available to everyone very soon! :-)


v5.91.9537 (16 Mar 2022)

Maintaining cleaning reliability

  • We’re now cleaning Google syndication cookies fully in Google Chrome

Making CCleaner easy to use

  • We’ve created a new way to register a license key in the product (find it in ‘Options’ > ‘License Key’)
  • We’ve improved the design of the screen to make it simpler to register your CCleaner license key
  • You’ll now see a more helpful message if something goes wrong
  • Finally, we have an improved screen where you can review and manage your license

Keeping the app running smoothly

  • We addressed a bug that was causing the ‘Save to Text File’ action in the Uninstall tool to add unwanted whitespace, making it copy-paste-unfriendly for spreadsheets
  • CCleaner no longer crashes when importing cookies from a text file (‘Cookies to Keep’ right-click menu)


v5.90.9443 (16 Feb 2022)

Expanding our cleaning

  • Added new temp file cleaning for Chrome User Data
  • Added new temp file cleaning for various Windows system components
  • Added new temp file cleaning for Microsoft Photos app
  • Fixed a bug in cleaning for Windows Game Explorer

Even more reliable driver updating

  • Since its release in July 2021, we have put a lot of focus on minimizing the possibility of errors when using Driver Updater
  • This release includes two new safety features in our proprietary technology, which reduce the likelihood of problems occurring
  • Driver Updater is a feature of our premium CCleaner Professional product
  • You can check for available updates for free, but you get updates you need to either upgrade or start a free trial

NEW! Automatic language detection on install

  • Some of you told us that you uninstalled CCleaner because it doesn’t have translations when, in fact, we support over 60 languages!
  • To remedy this, when you first install CCleaner, it will intelligently start up in a suitable language based on your system settings
  • This only affects completely fresh installations (over-the-top installs do not modify language settings)
  • You can change your language setting inside the app ‘Options’ > ‘Settings’ (more).