Service Principal Names (SPN) get used for Kerberos authentication. SQL Server require that all instances have SPNs configured, if not Kerberos authentication fails. By default
Tag: Service Principal Names (SETSPN)
Login failed for user ‘NT AUTHORITY\ANONYMOUS LOGON’ with SQL Server Reporting Services
How to setup Kerberos delegation to avoid anonymous logon failure messages.
Login failed. The login is from an untrusted domain…
Troubleshooting Failed Login, login is from an untrusted domain and cannot be used with windows authentication.
SQL Canada (SQLCAN) 