Installation / Registration / Uninstallation


Installation of cFosSpeed is easy and convenient, taking only a few steps:

  • Download the latest file and save it to your hard drive.
  • Extract and execute the file (cfosspeed-vXXX.exe) by double-clicking on it.
  • The install assistant will then guide you through the rest of the installation process.
  • cFosSpeed can be used immediately after successful installation.

Some people experience difficulties while installing cFosSpeed.

There are two symptoms:
  • The installations hangs / takes more than 15 minutes
  • The installation fails and in the file CFOSSPEED_SETUPLOG.TXT in the WINDOWS directory there is the error message
    Could not find driver, Driver not in the deviceinfoset, No compatible driver

These problems are very often caused by general problems with the network configuration or by other network components. While Windows installs cFosSpeed it asks all other network components for permission. If one of these component has strange or faulty behaviour, the installation fails.

  1. Try installing in safe mode
  2. Install cFosSpeed with parameter -ide (see instructions below). This prevents our installer from cleaning up the installation directory after the failed installation. Then you can try to install cFosSpeed with the windows installer: Go to your netork connections (clickk start, connect to, all connections) and chose the connection you want to install cFosSpeed for. clickk properties, network, install, service, have disk and select the file SPEED.INF (SPEED_X64.INF) in the cFosSpeed installation directory.
  3. Disconnect all TCP connections. Before the actual installation the number of TCP connections is logged in CFOSSPEED_SETUPLOG.TXT in the WINDOWS directory. If you are unsure, pull all relevant network cables. Try installing again.
  4. Deinstall other relevant network components, reboot and try installing cFosSpeed again. If this helps, please inform us, which network component caused the problem. Maybe we can implement a work-around for it in the next cFosSpeed version.
  5. Last resort: Re-install Windows.

Install cFosSpeed with the option -ide
  1. Uninstall your cFosSpeed version
  2. Download the latest cFosSpeed Beta version
  3. Install this version with the option -ide
  4. The install dialog should be finished without error messages. Now please take the following steps:
  • Go to START/SYSTEM PANEL/NETWORK CONNECTIONS and do a right-click on your LAN-Connection. Then choose ‘Properties’
  • Click on ‘install’
  • Choose ‘Service’ and then ‘add’
  • Using “Search” you go to the cFosSpeed install directory and choose the file SPEED.INF
  • Confirm with OK and the cFosSpeed Service should now be installed.


1.  Using the 30 digit serial key from MyCommerce (xxxxx-xxxxx-xxxxx-xxxxx-xxxxx-xxxxx)
  • Click right on the cFosspeed status window or the cFosSpeed task icon.
  • The cFosSpeed context menu opens.
  • Choose “Enter cFosSpeed serial number” and follow the instructions.
  • Enter the 30 digits serial key.
2.  Using the 16 digit password (xxxx-xxxx-xxxx-xxxx)
  • Please note that this method is a legacy one and should be used only with older cfosspeed versions. If you have an old licence file and have lost the it, please contact us, mention the email you used to buy the old version, and we will create a new version for you.
  • Execute the C:/ProgramData/cfos/cfosspeed/ key.cfosspeed file by double-clicking on it.
  • The install assistant will then guide you through the rest of the registration process.
  • After accepting the terms and conditions for your license, you should again enter your password and close the dialog.
  • Your copy of cFosSpeed is now registered to you personally.
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You’ve lost your license key or password
  1. Please use our Contact Form or email us at
The license key opens like a text file
  1. Save the license key to your hard drive
  2. Open the file by right clicking on it and selecting Open with and then using Search for choosing the cFosSpeed installation program setup.exe inside the cFosSpeed installation directory, e.g. C: -> Programs -> cFosSpeed -> setup.exe
Licence Key is Corrupt

The licence key might have become corrupted when downloaded from the server. In this case, please uninstall the software, reboot and reinstall. Afterwards, follow one of the following instructions to register the product:

1- Click on the windows Start button and search for “Enter cfosSpeed serial number”, and follow the instructions.
2- See (1. – Using the 30 digit serial key from MyCommerce) above
3- See (2. – Using the 16 digit password) above


  • To uninstall cFosSpeed just use the common Windows uninstall method.
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