What is spd.exe?

The genuine spd.exe file is a software component of cFosSpeed by cFos Software.
cFosSpeed is an Internet traffic shaping utility. Spd.exe runs 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.

Spd stands for cFosSpeed Service

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 spd.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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Spd.exe file information

Windows Task Manager with spd
Spd.exe process in Windows Task Manager

The process known as cFosSpeed Service belongs to software cFosSpeed or XFast LAN or Turbo LAN or ROG GameFirst II or cFosSpeed Service by cFos Software GmbH ( or Savepath Deals.

Description: Spd.exe is not essential for the Windows OS and causes relatively few problems. Spd.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 395,136 bytes (15% of all occurrences), 314,584 bytes and 44 more variants. 
The program is not visible. The file is not a Windows system file. The spd.exe file is certified by a trustworthy company. Spd.exe is able to monitor applications. Therefore the technical security rating is 42% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you run into problems with spd.exe, you can remove the entire program cFosSpeed or XFast LAN using Windows Control Panel, search for help on the company [1][2]’s website or update [1][2] the program to the latest version.

Recommended: Identify spd.exe related errors

If spd.exe is located in a subfolder of the user's profile folder, the security rating is 54% dangerous. The file size is 164,864 bytes. The program has no visible window. The spd.exe file is not a Windows system file.

If spd.exe is located in a subfolder of C:\Windows, the security rating is 54% dangerous. The file size is 436,952 bytes. The program has no visible window. The file has a digital signature. The process uses ports to connect to or from a LAN or the Internet. The file is not a Windows system file. Spd.exe is able to monitor applications.

Important: Some malware camouflages itself as spd.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Bitcoinminer (detected by Symantec), and TROJ_GEN.R47CEF1 (detected by TrendMicro). Therefore, you should check the spd.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

It improve your internet connection
CFosSpeed Traffic Sharping
  Sarusani   (further information)
Seems harmless. It is suposed to be a necessary service for a recent version of cFosSpeed.
  Fritz   (further information)
cFosSpeed Service
Cfos Speed - NetSpeed Tweaker Software
Its cfosspeed.a tool to fasten and optimize internetconnection
It's a necessary component of cFosSpeed.
  cfos_chris   (further information)
CFosSpeed file for faster internet
to jest kurwa od cfosspeeda i tego nie ruszaj do chuja wafla
spd.exe tok 100% of my internet speed, that i cannot using it. After cFosSpeedS program uninstaled, network come back to normal. Just uninstal it , you dont need it

Rating chart

Summary: Average user rating of spd.exe: based on 14 votes with 10 user comments. 10 users think spd.exe is essential for Windows or an installed application. 3 users think it's neither essential nor dangerous. One user suspects danger.

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Best practices for resolving spd issues

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

spd.exe [all]