Installing 20-sim 4C

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Installing 20-sim 4C

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20-sim4C can be downloaded from the website This is an installation file that will install 20-sim on your computer. In this topic we describe how to obtain a valid license for 20-sim.

1.Install 20-sim 4C on the same computer as 20-sim 4.1 Professional or higher.

2.From the Windows Start menu open 20-sim 4C.

If a valid license of 20-sim 4C was activated before, the program will start automatically. If you have not installed 20-sim 4C before, the License Activation dialog will open:


20-sim 4C 2.1 License Activation Dialog.

3.If you have a valid license key or license file, press the Activation button to enter your license key or browse for the license file.

If you do not yet have a valid license, use the e-mail button 20sim4C_LicenseEmailButton to request an evaluation license or to purchase a license.

4.Select which kind of license you have and who should use the license.


License installation dialog.

5.On the next dialog, select I received a license key by e-mail when you have a license key. When you got a license file, select the other option.


License key or license file?

6.Enter your 20-sim 4C license key (or browse for the license file):


Enter your license key.

7.In case of a license key, 20-sim 4C will now validate your license on-line. Please make sure that you have a working Internet connection. Click Activate now to continue.


On-line license activation.

As a result of a successful license installation, 20-sim 4C shows your license information in a dialog:


License activation was successful.

After closing the license information dialog, 20-sim 4C is ready for use and should look like the figure below:


20-sim 4C.

If you cannot open 20-sim 4C or have problems with the installation or the license activation, please check the troubleshooting section. If this does not help, please contact Controllab Products B.V.