Now, run TDS software on the server first and then on the node system.
Error Description 2: [DBNETLIB][ConnectionOpen(Connect0),]SQL server does not exist or access denied.
NOTE: - On successful connection the file is to be saved at the location where the software is installed on the LAN system.
Default Location: - “C:\Program Files (x86) \K.D.K. Software\Spectrum\Zen TDS”.
If the same issue arises, please try connecting to the TDS database using the Administrative Tool - Process.
I hope this solution proves helpful.