What is fixccs.exe?

The genuine fixccs.exe file is a software component of Windows by Microsoft.
A process required during installation of Windows XP, fixccs.exe creates registry keys that are necessary for installation, and then removes them when the install is completed. This process caused numerous problems when Microsoft released Service Pack 3 for Windows XP, because users running Symantec would find that the antivirus software would allow new registry keys to be created but not deleted, resulting in hundreds or even thousands of useless registry entries. A fix was released on the Microsoft website.

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 fixccs.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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Fixccs.exe file information

The process known as Fix CCS MaxSubkeyName mismatch belongs to software Microsoft Windows Operating System by Microsoft (

Description: Fixccs.exe is not essential for Windows and will often cause problems. Fixccs.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\Windows. The file size on Windows 10/8/7/XP is 4,608 bytes. 
The program is not visible. It is a Microsoft signed file. The fixccs.exe file is not a Windows core file. Therefore the technical security rating is 16% dangerous, however you should also read the user reviews.

Recommended: Identify fixccs.exe related errors

Important: Some malware camouflages itself as fixccs.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the fixccs.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

mcafee blocked allt of atacks from this file
fixccs.exe is part of Windows but may be a cause of problem during the Windows XP SP3 installation
  Larry   (further information)
it is included within xp service pack 2 once the zip has unpacked and you comit to install fixccs.exe installs code into the registry which is repeated and expanded on each new key it writes in the registry the finnished link entries resemble a triangle. what happens next time you boot up the system falls into an infinate loop . i got around it by creating a bogus fixccs.exe file and replaced the genuine prior to running the unpacked service pack. another thing the sp unpacks into a randomnumbered and lettered folder prior to the install ie c:\bh654687921h645ki4544\i386\update\fixccs
  richard c alias rcet  

Summary: Average user rating of fixccs.exe: based on 3 votes with 3 user comments. One user thinks fixccs.exe is essential for Windows or an installed application. One user suspects danger. One user thinks fixccs.exe is dangerous and recommends removing it.

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Best practices for resolving fixccs issues

A clean and tidy computer is the key requirement for avoiding problems with fixccs. 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 repairing of your installation or, for Windows 8 and later versions, 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 fixccs.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

fixccs.exe [all]