Failed to delete the Windows Server Failover Clustering (WSFC) registry subkey '%1!s!' (Error code %2!s!). The parent key ...

Failed to delete the Windows Server Failover Clustering (WSFC) registry subkey '%1!s!' (Error code %2!s!).  The parent key is %3!s!the cluster root key.  The WSFC service may not be running or may not be accessible in its current state, or the specified arguments are invalid.  For information about this error code, see "System Error Codes" in the Windows Development documentation.