After installing RFEM 5.20.01 or RSTAB 8.20.01, our network license does not work any more. What can we do?


With the release of the customer version X.20.01, the license drivers of GEMALTO have also been replaced. The update of the GEMALTO drivers closes a safety gap. Therefore, it is necessary to install the new drivers on the server.

So proceed as follows:

  1. Download the drivers:

  2. Close the Dlubal Software programs on the clients.

  3. Install the new drivers on the server.

The server is a computer with the inserted network dongle or activated NET‑SL. The client is a computer on which the DLUBAL programs are running.

Note: The previous program versions can also be used with the new license driver.


Driver update License problem 5.20 License problem 8.20

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD