What is cfosspeed.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 cfosspeed.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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Cfosspeed.exe file information

Windows Task Manager with cfosspeed
Cfosspeed.exe process in Windows Task Manager

The process known as cFosSpeed Window belongs to software XFast LAN or ROG GameFirst II by cFos Software GmbH (

Description: Cfosspeed.exe is not essential for the Windows OS and causes relatively few problems. Cfosspeed.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 867,544 bytes (20% of all occurrences), 1,441,152 bytes and 13 more variants. 
It is digitally signed. It is not a Windows system file. The program is loaded during the Windows boot process (see Registry key: MACHINE\Run). Cfosspeed.exe is able to monitor applications. Therefore the technical security rating is 22% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can also do the following:
  1) remove the entire program cFosSpeed or XFast LAN using Windows Control Panel
  2) go to the software publisher,, [1][2] for advice
  3) look for a new, improved version [1][2].

Recommended: Identify cfosspeed.exe related errors

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

cFos Treiber für's DFÜ-Netzwerk
Treiber für Internet-Verbindung,Beschleunigt-WWW
  Max Master  
CFOS programm - find ich ganz nützlich und kann mich "Max Master" nur zustimmen... ich würde trotzdem emule ausschalten wenn ich CounterStike spielen möchte - sooo gut ist das programm dann wohl auch nicht.
Spyware! Mein AV Prog hat sogar einen Trojaner entdeckt! (in dem cFos Ordner)
cFosSpeed is an add-on network driver.
  Phoneywar   (further information)
cFosSpeed is a Quality of Service network shaper/router to help with games and is installed with ASUS and ASROCK motherboards. It may have been hijacked or abused by to launch browser links from the desktop. It worked for so many years without doing so that I imagine it got hijacked by something else
  Shad   (further information)

Rating chart

Summary: Average user rating of cfosspeed.exe: based on 6 votes with 6 user comments. 4 users think cfosspeed.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous. One user thinks cfosspeed.exe is dangerous and recommends removing it.

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Best practices for resolving cfosspeed issues

A clean and tidy computer is the key requirement for avoiding problems with cfosspeed. 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 cfosspeed.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

cfosspeed.exe [all]