Too much time taken to populate the list of NetBackup primary servers
If it takes too long to display the NetBackup primary server list, validate the primary server using the option on the plug-in's Veritas NetBackup page. If the validation reveals an error, contact the NetBackup administrator and check the vSphere Client Virgo logs at the following location:
Linux: /storage/log/vmware/vsphere-ui/logs/vsphere_client_virgo.log
Windows: C:\ProgramData\VMware\vCenterServer\logs\vsphere-ui\logs\vsphere_client_virgo