Unable to Remove vDS from vCenter 5.5

Hi All,

I'm trying to remove a distributed switch from the vcenter but it comes up with an error message box:

"vDS SW-DCN-C1_C2 port c-40 is used by entity <not-found.> Virtual NIC 4000, type:vmVnic"

I've delete all port groups, and remove all hosts and vm that were connected tovds.

I've move down, all vds and c-40 port id to "Unused Uplinks" the dvUplink in Teaming and Failover Policies.

Whatelse can I do?

Thanks for the helpeveryone.