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2021-10-22

Login – SSL Handshake Failed

When trying to log in, I get an error message: SSL handshake failed. What can I do?


Answer:

If you see this error message, you cannot connect to our license server to verify your license.

Please ask your IT department to check the communication with our server. It is necessary to enable the following access in the firewall policies as well as in the network:

  • Server name: lm.dlubal.com
  • Server IP: 89.187.130.211
  • Server Port: 443

If the connection still does not work after this procedure, your IT department needs to check whether the SSL certificate has been exchanged, based on your internal guidelines (for example, using a proxy). Sie sollten dies mit einer Software (z. B. OpenSSL) in der Kommandozeile prüfen können:

  • cd C:\Program Files\OpenSSL-Win64\bin
  • openssl.exe s_client -connect lm.dlubal.com:443

Author

Mr. Hoffmann is responsible for development in the areas of dynamic analysis, membrane structures, and RWIND. Furthermore, he provides technical support for our customers.



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