MSC200826: General Support: Raynet License Activation Tool


The underlying connection was closed: An unexpected error occurred on a receive.

We have improved the security settings of our license server. As a result, the activation process may return the following error:




To solve this, the configuration of the activation tool must be adjusted.

Open the configuration file Raynet.LicenseActivation.exe.config located in the same place as the executable of the activation tool:



Add the following to the configuration file (or edit, if already present):

    <add key="securityProtocol" value="TLS,TLS11,TLS12" />




In some versions of the License Activation Tool TLSl2 is configured instead of TLS12

Make sure to change this to TLS12 if necessary.


Save the file and perform the activation as usual.




Have more questions? Submit a request


  • Avatar
    Emilio Garcia

    Good afternoon.

    Problem solved.

    Thank you very much for your help.

Powered by Zendesk