Citrix XenDesktop - Vcenter cluster access problem

Hi All,

We are installing a Citrix Xendesktop 7 setup on vsphere 5.1u1. When trying to provision VDI desktops in Citrix provisioning services it gives the below error after provisioning about 3 VMs. (Failed to connect with the requested server. Invalid or insufficient credentials (Cannot complete login due to an incorrect user name or password. [InvalidLogonFault]),

Here [ VDI-Cluster01] is the connection made to vsphere cluster in Citrix.

Vcenter version is 5.1 build 1235232.

Citrix version is XenDesktop/Provisioning services 7

Any help is much appreciated.

Thanks,

Indika.