Microsoft Volume shadow copy service (VSS) invokes OnLunEmpty method to the hardware provider when it receives a delete request on the snapshot. The EqualLogic VSS hardware provider does the iSCSI session logoff of the snapshot, offlines the snapshot, and then deletes the snapshot. iSCSI logoff of the snapshot can fail for multiple reasons one of them being a process holding a handle to the snapshot volume. In this case a delete request on the snapshot is received, but because of the iSCSI logoff failure it is insignificant and is ignored and the snapshot is deleted. For such iSCSI logoff failed instances, when the iSCSI initiator tries to connect again to the target, it results in this error.