Why do I suddenly receive a warning "Program authorization failed"? Yesterday, I could still open RFEM/RSTAB as full version. I am not aware of anything changed.
authorization, warning, error message, program start
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
The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions