What is cfosspeed.exe?

The genuine cfosspeed.exe file is a software component of cFosSpeed by cFos Software.
cFosSpeed is an Internet traffic shaping utility. cfosspeed.exe runs the user interface process for the cFosSpeed program. This is not an essential process for Windows and can be disabled if known to create problems. cFosSpeed is a packet filtering program used for controlling incoming and outgoing data streams in order to improve internet latency and overall connection speed. The program features a firewall, data volume configuration, displays online time, and also offers a network monitoring utility. cFosSpeed supports the Windows platform. cFos Software GmbH is a German software company that develops communication and traffic shaping software for the Windows platform. The company was founded in 1993 and has since developed software for servers, routers, DSL and ISDN dial-ups, as well as personal computers. cFos is based in Bonn, Germany.

cFosSpeed stands for cFosSpeed User Interface

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.

Click to Run a Free Scan for cfosspeed.exe related errors

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 or Turbo LAN 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 (16% of all occurrences), 1,441,152 bytes and 16 more variants. 
It is digitally signed. It is not a Windows system file. Cfosspeed.exe is able to monitor applications. Therefore the technical security rating is 20% 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)
This appears to be part of Gigabyte Speed program used for their LAN driver package.
  Jeremy   (further information)

Rating chart

Summary: Average user rating of cfosspeed.exe: based on 7 votes with 7 user comments. 4 users think cfosspeed.exe is essential for Windows or an installed application. 2 users think 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 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.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: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

cfosspeed.exe [all]