After setting up a cluster client within NetVault Client Management, a “Failed to create Virtual Client Display Node” error message was displayed at the bottom of the Virtual Client Installation Summary window.
The reason for this error is that no Application IP Address had been entered.
All instructions on setting up a cluster client are in Chapter 14 of the NetVault Backup Administrators Guide on the following link under the Documentation tab:
https://support.quest.com/NetVault Backup