Could not register the Service Principal Name (SPN)

Recently I checked my SQL Server Error Logs. Quite some interesting information in my opinion, however I also found this message: Date  25-7-2017 18:26:41 Log  SQL Server (Archive #3 – 25-7-2017 18:34:00) Source  Server Message The SQL Server Network Interface library could not register the Service Principal Name (SPN) [ MSSQLSvc/SQL01.contoso.lan:NAV ] for the SQL Server service. Windows… Read More Could not register the Service Principal Name (SPN)