After a few days the activated softlock license, student license, or trial version has worked, it cannot be run anymore due to a license problem. On some computers, the message "Virtual machine detected" appears.
What is the reason for this?


If using a real computer with the Windows operating system and there were no hardware changes and/or new installation of the operating system, the license problem is usually caused by the following:

  • The mandatory service "Sentinel LDK License Manager" may be damaged after a Windows update.
Solution: Reinstall the driver. You can download and install it under the following link.

  • The antivirus program blocks the hasplms.exe file.
Solution: Add hasplms.exe from the directory to the exceptions of the antivirus program.

  • Other security software (for example, Sandboxie) prevents proper communication of the license service.
Solution: You can either add hasplms.exe to the trusted programs or uninstall this software.


Hasplms.exe Sentinel LDK License Manager Softlock Trial Trial version Exception Sandboxie Virtual machine detected Error No. 30598

Contact us

Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

+49 9673 9203 0

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
Stand-Alone Steel Structures

Stand-Alone Program

Design of crane runway girders according to EN 1993-6 and DIN 4132

Price of First License
1,480.00 USD
Stand-Alone Timber Structures
RX-TIMBER Glued-Laminated Beam 2.xx

Stand-Alone Program

Timber design of single-span and wide-span glulam beams according to Eurocode 5 or DIN 1052

Price of First License
1,120.00 USD