Browse doesn’t show object, because the backup host specified is a virtual machine running on HyperV server and this is Microsoft limitation. It worked when we selected physical server as the backup host.
Note: HPE Data Protector 9.06 Integration Guide - Microsoft Hyper-V backup types
In a Microsoft Hyper-V cluster environment, the backup host cannot be a virtual machine running on one of the
Microsoft Hyper-V systems. This is a Microsoft product limitation.