Why do I receive Warning 945 'Program authorization failed'? Yesterday, I could still open the program as a full version.


Please check, if the program has been accidentally opened by clicking the 2D version shortcut. 2D versions have a special licence key. So if you have a '3D full version', please open the program by clicking the corresponding shortcut (see Figure 02 left).

The 2D version is not available for students as the 3D full version is always licenced. With this version, it is also possible to calculate planar models.


authorization program start 945 warning full version licence

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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