1. Ensure the SpectroSERVER process is up and running
2. Ensure you are logged into the system as a user that has an associated Spectrum user model. Best practice is to log into the system as the user that owns the Spectrum installation. Also, if on Windows, Spectrum is case sensitive. So if the Spectrum user is "Spectrum", make sure to log into the system as "Spectrum" and not "spectrum" or "SPECTRUM".
3. By default the connection will only wait for 1000 ms (1 second). This can be changed by modifying the connect_time_limit parameter in the $SPECROOT/vnmsh/.vnmshrc file. After changing the value, please kill the running VnmShd process and reconnect.
4. Kill the running VnmShd process and reconnect