The authorization of the program failed. The diagnostic file has the error "Error 0x1772 (6002): Specified License Manager could not be found". What is the reason?


Please open the services under Control Panel -> Administrative Tools and check if the service "Sentinel LDK License Manager" is started. If necessary, restart the service. Please also set the start type 'Automatically' for this service (see Figure 1).

If that does not solve the problem, the problem is probably caused by the dongle driver. Please reinstall it. The installation is described in the following FAQ:


Warning 50 Warning No. 50 License Manager

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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