What is ccApp.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the ccApp.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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CcApp.exe file information

Windows Task Manager with ccApp
CcApp.exe process in Windows Task Manager

The process known as Symantec User Session or Common Client User Session or Common Client CC App or Symantec Common Client User Session or System Process

belongs to software Client and Host Security Platform or Symantec Security Technologies or Common Client or Symantec AntiVirus or Norton AntiVirus (version 2003) or Norton Personal Firewall or ccCommon or Norton Internet Security

by Symantec (

Description: CcApp.exe is not essential for Windows and will often cause problems. CcApp.exe is located in a subfolder of "C:\Program Files\Common Files"—mostly C:\Program Files\Common Files\Symantec Shared\. Known file sizes on Windows 8/7/XP are 53,408 bytes (10% of all occurrences), 115,816 bytes and 73 more variants. 
There is an icon for this program on the taskbar next to the clock. CcApp.exe is not a Windows system file. The file is a Verisign signed file. The file has a digital signature. The software uses ports to connect to or from a LAN or the Internet. Therefore the technical security rating is 17% dangerous, however you should also read the user reviews.
In the event of any problems with ccApp.exe, you can remove the entire program Norton AntiVirus using Windows Control Panel, contact Customer Service or verify that you have installed the latest version.

Recommended: Identify ccApp.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as ccApp.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ccApp.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Blazes along consuming 99% of CPU until I re-start my laptop which is a 2005 era VAIO running Windows98 and..... Norton Anti-virus.
Running an old system with xp and with Norton anti-virus 2005. From Task manager: CPU usage is at 100%. CCAPP is using all available memory. Browsers are useless. After reading around (on another machine), I decided to uninstall Norton. When I did this, I was able to do a normal shutdown, and when I restarted CCAPP was gone, and the system was really fast - even the browsers.
I removed Symantec/ Norton antiirus software from my laptop because it was hogging huge amounts of cpu time. Now on startup I get ccApp.exe could not be found. System runs far better without the AV software and I don't care at all whether ccApp can be found or not!!!
  Robert Colson  
Not dangerous, just a resource HOG
It's part of Symantec-Norton. I uninstalled the Norton but it's still there and every time I shut down, it wastes time.
slows my PC to almost a stand still. its awful.
Open "Symantec Client Firewall" -- Status and Settings -- Turn Ad Blocking OFF (ON turns ccApp.exe on and hogs CPU)
It's Symantec/Norton garbage, get rid of it and use a REAL AV/security program! The detection rate for symantec products is relatively crappy, the bug rate is incredible. Some version don't even add properly when showing the download size for various updates. Suggest Avira, Eset, or Avast. But before you do that go get the Norton Removal tool to get rid of the Norton junk that norton can't uninstall!!
  MrPicky   (further information)
More comments can be found here:
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Rating chart

Summary: Average user rating of ccApp.exe: based on 471 votes with 9 reviews. 175 users think ccApp.exe is essential for Windows or an installed application. 37 users think it's probably harmless. 130 users think it's neither essential nor dangerous. 72 users suspect danger. 57 users think ccApp.exe is dangerous and recommend removing it. 65 users don't grade ccApp.exe ("not sure about it").

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Best practices for resolving ccApp issues

A clean and tidy computer is the key requirement for avoiding problems with ccApp. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ccApp.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ccApp.exe [all]