84,488,480 programs installed

Should I remove CCleaner?

What percent of users and experts removed it?
3% remove it97% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #5
United States Rank #13
Reach 35.2495%
(Not enough data to show 30 day installation trends)
Uninstallation trends (last 30 days)
Lifespan of installation (until removal)
< 856.00 days
1655.15 days >
Average installed length: 869.65 days


5.63 0.07%
5.62 0.01%
5.61 0.01%
5.60 0.01%
5.59 0.00%
5.58 0.00%
5.57 0.00%
5.56 0.00%
5.55 0.00%
5.54 0.00%
5.53 0.00%
5.52 0.00%
5.51 0.00%
5.50 0.00%
5.49 0.00%
5.48 0.00%
5.47 0.00%
5.46 0.01%
5.45 0.00%
5.44 0.11%
5.43 0.19%
5.42.6495 0.00%
5.42 0.47%
5.41 0.85%
5.40 0.30%
5.39 0.39%
5.38 0.59%
5.37 0.16%
5.36 0.10%
5.35 0.17%
5.34 0.02%
5.33 0.03%
5.32 0.09%
5.31 0.43%
5.30 0.54%
5.29 0.60%
5.28 0.84%
5.27 0.81%
5.26 0.72%
5.25 0.71%
5.24 0.33%
5.23 0.66%
5.22 1.07%
5.21 0.81%
5.20 0.75%
5.19 0.82%
5.18 0.76%
5.17 0.79%
5.16 1.03%
5.15 1.01%
5.14 1.25%
139 versions

Typically installed together


What is CCleaner?

CCleaner developed by Piriform, is a utility program used to clean potentially unwanted files and invalid Windows Registry entries from a computer. CCleaner supports the cleaning of temporary or potentially unwanted files left by certain programs along with browsing history, cookies, recycle bin, memory dumps, file fragments, log files, system caches, application data, autocomplete form history, and various other data. The program also includes a registry cleaner to locate and correct problems in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing references application paths.

About  (from Piriform)

CCleaner is the number-one tool for cleaning your Windows PC. It protects your privacy online and makes your computer faster and more secure. Easy to use and a small, fast download.
  • Starts automatically

Program detailsProgram details

URL: www.piriform.com/ccleaner
Help link: www.piriform.com/support
Installation folder: C:\Program Files\CCleaner
Uninstaller: "C:\Program Files\CCleaner\uninst.exe"
Estimated size: 5.07 MB
Language: Turkish (Turkey)

Program filesFiles installed by CCleaner

Program executable:ccleaner.exe
Path:C:\Program Files\ccleaner\ccleaner.exe
Additional files:
  • CCUpdate.exe - Piriform Updater (CCleaner emergency updater)
  • CCleaner64.exe - CCleaner
  • uninst.exe - CCleaner Installer
  • branding.dll - branding Dynamic Link Library

Program behaviorsBehaviors exhibited

4 Scheduled Tasks
  • CCleaner.exe is scheduled as a task with the class '{2CE5F6B7-1349-43FF-A90B-2C73E1F0E916}' (runs on registration).
  • CCleaner64.exe is scheduled as a task with the class '{73643B3D-134F-4147-AB89-446E1B259CAF}' (runs on registration).
  • CCUpdate.exe is scheduled as a task named 'CCleaner Update' (runs daily at 18:17).
  • uninst.exe is scheduled as a task with the class '{633F8ED2-DEAC-4FD0-9772-548A7DF6ED34}' (runs on registration).
3 Scheduled Tasks (Boot/Login)
  • CCleaner64.exe is automatically launched at startup through a scheduled task named CCleaner Monitoring_Reg_HKCURun_S-1-5-21-716152370-2729585503-2280685889-1001.
  • CCleaner.exe is automatically launched at startup through a scheduled task named 4.
  • CCUpdate.exe is automatically launched at startup through a scheduled task named CCleaner Update.
2 Startup Files (User Run)
  • CCleaner64.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'CCleaner' and executes as "C:\Program Files\CCleaner\CCleaner64.exe" /AUTO.
  • CCleaner.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'CCleaner' and executes as "C:\Program Files\CCleaner\CCleaner.exe" /AUTO.
2 Startup Files (All Users Run)
  • CCleaner64.exe is loaded in the all users (HKLM) registry as a startup file name 'CCleaner Monitoring' which loads as "C:\Program Files\CCleaner\CCleaner64.exe" /MONITOR.
  • CCleaner.exe is loaded in the all users (HKLM) registry as a startup file name 'CCleaner Monitoring' which loads as "C:\Program Files\CCleaner\CCleaner.exe" /MONITOR.
3 Windows Firewall Allowed Programs
  • CCleaner.exe is added as a firewall exception for 'C:\Program Files\CCleaner\CCleaner.exe'.
  • CCUpdate.exe is added as a firewall exception for 'C:\Program Files\CCleaner\CCUpdate.exe'.
  • uninst.exe is added as a firewall exception for 'C:\Program Files\CCleaner\uninst.exe'.

Program resource utilizationResource utilization averages

Memory:6.63 MB
21.09 MB average
Total CPU:0.1251704236%
0.031193% average
Kernel CPU:0.06746379%
0.016088% average
User CPU:0.05770663%
0.015104% average
CPU cycles/sec:123,981,302
8,062,084 average
I/O reads/min:417.74 MB
435.61 KB average
I/O writes/min:40.39 KB
105.02 KB average
Memory:15.17 MB
Total CPU:0.0026591782%
Kernel CPU:0.00012355%
User CPU:0.00253563%
CPU cycles/sec:210,919
I/O reads/min:404 Bytes
I/O writes/min:257 Bytes

How do I remove CCleaner?

You can uninstall CCleaner from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program CCleaner, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove CCleaner.

Win 7 (SP1) 49%
Win 10 0%
Automatically starts? Yes
(Found in the run registry)
Uninstall it 3%
Keep it 97%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 53.18%
Windows 10 36.01%
Windows XP 5.86%
Windows Vista 4.92%
Windows Server 2003 0.03%
Which OS releases does it run on?
Windows 7 Home Premium 26.66%
Windows 7 Ultimate 13.28%
Windows 10 Home 10.46%
Windows 7 Professional 10.15%
Windows 8.1 8.83%
Microsoft Windows XP 5.78%

Distribution by countryGeography

42.03% of installs come from the United States
Which countries install it?
  United States 42.03%
  Germany 9.22%
  France 5.56%
  Italy 5.30%
  United Kingdom 4.49%
  Brazil 2.79%
  Canada 2.61%
  Netherlands 2.04%
  Spain 1.59%
  India 1.30%
  Australia 1.27%
  Belgium 1.07%
  Sweden 0.91%
  Poland 0.87%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 26.20%
Dell 18.96%
Acer 18.83%
ASUS 11.96%
Toshiba 6.44%
Lenovo 4.90%
Samsung 4.09%
Intel 1.31%
American Megatrends 1.06%
Medion 1.04%
Common models
HP Pavilion dv6 Notebook ... 6.17%
HP Pavilion g6 Notebook P... 5.50%
ASUS All Series 5.47%
HP Pavilion dv7 Notebook ... 4.58%
HP Pavilion g7 Notebook P... 2.78%
HP Pavilion 15 Notebook P... 2.57%

About Piriform

Piriform is develops software for the Microsoft Windows whose products include CCleaner, Recuva, Defraggler, and Speccy.
Publisher URL: www.piriform.com

comments10 comments

user comment
user comment
InqDethover a year ago
I love this program; it works well to totally get rid of the programs that this site recommends the uninstalls on; good at cleaning out unwanted files.
user comment
ThraxGordonover a year ago
This is actually a very useful program. I use it for more than just cleaning up unwanted things too. In many cases, it is more efficient for uninstalling programs since I can uninstall multiple programs at once, unlike with the control panel on Windows 8. I find it funny that 3% would uninstall it.
user comment
kimn0060over a year ago
After the hype over wise care 365 and wise registry cleaner on other places, shouldiremoveit lead me back to CCleaner. I like CCleaner as it is quite safe and reliable as said by others especially when comparing to wisecare. I'll only download CCleaner on the exceptions that HTG adviced.
user comment
J.over a year ago
@ktek Always back up your files before you do a registry clean :-)
user comment
AndStayOutover a year ago
I have used the free version for several years. I found the controls intuitive right out of the box, and it's more user friendly and much less cluttered w features I don't need or use. I wouldn't want to be w/o my handy CCleaner! I first tried it on my old Dell w XP, and now it's been busy tidying up and protecting my replacement Dell PC since the day I fired it up 1 yr ago as of late Feb 2013. IMHO Piriform's CCleaner has proven to my satisfaction that it works well. It's a favorite among C-Net visitors, and it has tons of positive reviews. I personally like it better than some cleaning software I paid for in the past on my old Dell. It also doesn't hog a lot of space or resources, and it isn't loaded w malware. You won't suddenly see pop-ups and notice performance slow downs, to the contrary CCleaner will help purge your machine of all that annoying and potentially dangerous garbage! I use it daily when shutting down. It does a nice job of "taking out the trash!" You can expect to be offered a free update about once around the end of each month. I may eventually try the paid version. If the free one is this good, then I don't think I can go far wrong w the higher horsepower version! ....And NO I wasn't paid to endorse this (or any other product) I just thought I'd put in my 2 cents for those trying to make a decision. Don't hesitate to take it for a test drive for a week or two, if you don't like it then just uninstall. But I'll bet you'll keep it and wish you had it all along!
user comment
Heegg2over a year ago
I use this often and really like it.
user comment
quatorzeover a year ago
Keep this program and use it regularly. I run the Registry Cleaner tool weekly and the Cleaner tool twice a month. There is no doubt that my PC runs faster because of this program.
user comment
ktekover a year ago
Had this and extension companion a long time. Always they found lots and lots of things to remove "safely." Eventually the OS would not load many programs, then complain about missing dlls, then go completely unfindable. Had to do fresh reinstalls to manufacturer loading every 2 months. Left it off 8 months ago when reinstalling. Win7 Home Pro 64 bit OS just fine now. Cannot prove a negative but that's the only environmental change. BEWARE.
user comment
Sneetchover a year ago
Keep this program, it is a tool created by Piriform that is much more efficient than all the similar Windows tools.
user comment
13lolwutover a year ago
Keep this program if you have it, Or if you don't, you should install it. It really gets rid of junk files that are not needed. This can speed up your computer if you have a slow running computer.