TTWin3 versions 3.0 through 3.7 requires both a Serial number and an Activation key in order for you to install and use the software.

TTWin 3.8 and higher use a TTWin Certificate Fle with a .tcf extension.

To license your copy of TTWin 3.7 and below, you must use the activation keys that are detailed on the License Certificate sent to you upon purchasing the product. You can apply your license key by selecting Help > About > License > Edit and updating the license details.

For version 3.8 and higher you must import the .tcf file into TTWin. You can do so by selecting Help > About > License > Import Certificate from the program menu and locating the .tcf file from your device.

If you have lost your Activation key/Serial number or lost your .tcf file and are a maintenance holder you will find your license material available for download here:

If your evaluation period has expired you will be prompted to update the license details when you attempt to start TTWin3. If you do not have your license details please contact This email address is being protected from spambots. You need JavaScript enabled to view it. or your Turbosoft representative.