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CCleaner – Most Popular PC Cleaner, Optimization Tool

CCleaner – Most Popular PC Cleaner, Optimization Tool

CCleaner tops most of the users’ free registry cleaners for several good reasons. It is completely free and works with all versions of Windows, Mac. Also, CCleaner doesn’t cause a problem in the Windows Registry, which some less-well-done registry repair tools do on a regular basis. It is also optionally available in a portable format (it doesn’t need to be installed).

CCleaner, like all registry cleaners, is primarily concerned with removing entries in the Windows Registry that refer to files, programs, or other resources that no longer exist. CCleaner works with 32-bit and 64-bit versions of Windows 10, Windows 8 (including Windows 8.1 & Windows 8.1 Update), Windows 7, Windows Vista, Windows XP, plus older versions of Windows as well. Two installation methods are available. The first is referred to as “Installer” and is a full install of CCleaner, which includes an option to also install Google Chrome and the Google Toolbar for IE. The second is the “Portable” version, which we recommend, and doesn’t require installation at all.

The abilities are exactly why CCleaner, or another well-designed registry cleaner, is a great troubleshooting step when faced with a “missing file” or “cannot find a file” sort of errors, especially as Windows starts. Specifically, CCleaner will remove registry entries that point to the following if they no longer exist: DLL files, file extensions, , type libraries, applications and application paths, fonts, help files, installers, sound events, and services. CCleaner also removes temporary browser data like cookies, history, and the from all popular browsers. You can also do things like empty the Recycle Bin, clear MRU lists, empty the thumbnail in Windows, remove old memory dumps and log files, and much more.

CCleaner has ‘Tools’ tab where you can automatically , view and change the programs that startup with Windows, find and remove files that are taking up lots of disk space, find duplicate files, remove restore points, and even wipe a drive.


  • Super small 6 MB size
  • Installs quickly
  • Multiple installation options
  • Keeps cookies that it knows you probably don’t want to delete (like webmail logins)
  • Unintrusive context menu addition to the Recycle Bin
  • Long history of regular program updates
  • A backup file is created before any changes to the registry are made
  • Killer feature set
  • Can avoid scanning registry keys and values you tell it to skip over
  • Support for a variety of Windows versions
  • Support for macOS 10.6 to 10.11 El Capitan
  • Available as an Android app


  • Standard download page is confusing and makes the program appear to cost money, which it does not

How to use CCleaner

To install, go to their downloads page and choose the installation option you’d like.

Choose “Installer” or “Slim” (if available) to install CCleaner as you would any normal program. Choose the “Portable” version if you’d like to run CCleaner from a flash drive or would just rather not install yet another program on your computer. You’ll need to unzip the program before running it in that case.

Once it’s up and running, follow these steps to clean the registry:

  • Click the Registry icon on the left.
  • Under the Registry Cleaner heading, make sure all of the options are checked.
    Note: If you have a good idea what you’d like CCleaner to “clean” from the registry then, by all means, limit the selection. For example, if you’re receiving an error when Windows starts about a program you no longer have installed, you could probably leave only the Run At Startup checked.
  • Click the Scan for Issues button. CCleaner is done scanning your registry for unnecessary entries when the green progress bar at the top of the screen reaches 100%.
  • Click the Fix selected issues… button.
    Note: While all of the registry entries that CCleaner found are checked by default, you can uncheck any entries you want to keep. One of the great things about CCleaner compared to its competition is that it doesn’t go overboard. You’re probably safe removing anything that it finds.
  • Click the Yes button on the dialog box that asks “Do you want to backup changes to the registry?”.
  • Choose an appropriate place to save the REG file and then click Save.
    This REG file can be used to undo the changes CCleaner is about to make to the registry.
  • On the next screen, click the Fix All Selected Issues.
  • Click Close after all the changes are complete. This might take just a second or two, up to several seconds, depending on many registry keys CCleaner is removing or changing and how fast your computer is.
  • You can now close CCleaner or perform some other system cleaning task with the program.

Download: Android | Mac OS | Windows

CCleaner is fully documented on Piriform’s website and is a great resource if you need some help.

Credits: https://www.lifewire.com/ccleaner-review-2625143

For Linux and Ubuntu, best CCleaner alternative is BleachBit.(click on the link to learn more)

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Linux & Windows Geek, Blogger & System Administrator

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