Review the output. If the port is in use by another process, stop that process and start the Veeam vPower NFS Service.
The results of the command will either list a process, or an error will be displayed stating that no objects were associated with the port. "Get-NetTCPConnection : No MSFT_NetTCPConnection objects found with property 'LocalPort' equal to '6161'. Verify the value of the property and retry."
Example of output when no processes is using port 6161.
Example of output when Veeam vPower NFS Service is running correctly.