NX error : To solve "Unknown error 948956" while opening NX 8.5

There might be two reasons that cause this error.

  • License server may not be working
  • Your windows firewall settings may block the communication.

When you start NX for first time, a pop up dialog will appear to request permission to communicate with license server.

You can check the connection status using the following command in CMD prompt.

"%UGII_BASE_DIR%\ugflexlm\lmutil" lmstat -i -c %UGS_LICENSE_SERVER%

If the connection works, then the command prompt will list out all the NX modules that you are installed and their available licenses