Although the current authorization file has been loaded, the program runs as a demo version.

Answer

The most common cause is an insufficient authorization.

Open RFEM or RSTAB by right-clicking the icon. In the shortcut menu, select the "Run as Administrator" option. Then, load the authorization file again using the menu "Help → Authorization."

Keywords

Demo Authorization file

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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