I am seeing the below error in the Directory services log of event viewer: Active Directory did not perform an authenticated remote procedure call (RPC) to another domain controller because the desired service principal name (SPN) for the destination domain controller is not registered on the Key Distribution Center (KDC) domain controller that resolves the SPN. Destination domain controller: 55a07d7a-ceed-4395-a70c-ad8b3b75024b._msdcs.hoc.nrc.gov SPN: E3514235-4B06-11D1-AB04-00C04FC2DCD2/55a07d7a-ceed-4395-a70c-ad8b3b75024b/hoc.nrc.gov@hoc.nrc.gov User Action Verify that the names of the destination domain controller and domain are correct. Also, verify that the SPN is registered on the KDC domain controller. If the destination domain controller has been recently promoted, it will be necessary for the local domain controllers computer account data to replicate to the KDC before this computer can be authenticated. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Active Directory did not perform an authenticated remote procedure call (RPC) to another domain controller because the desired service principal name (SPN) for the destination domain controller is not registered on the Key Distribution Center (KDC) domain controller that resolves the SPN. Destination domain controller: 55a07d7a-ceed-4395-a70c-ad8b3b75024b._msdcs.hoc.nrc.gov SPN: E3514235-4B06-11D1-AB04-00C04FC2DCD2/55a07d7a-ceed-4395-a70c-ad8b3b75024b/hoc.nrc.gov@hoc.nrc.gov User Action Verify that the names of the destination domain controller and domain are correct. Also, verify that the SPN is registered on the KDC domain controller. If the destination domain controller has been recently promoted, it will be necessary for the local domain controllers computer account data to replicate to the KDC before this computer can be authenticated. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Has anyone seen this error before? What may be the resolution to this? Thanks for any help!!