Error: 18456

HI All,

I am facing this issue in my SQL server cluster.

2010-10-19 02:56:59.380 Logon Login failed for user <Server name>\User1'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: ]

I have two node cluster in active passive mode.

recently someone has truncated the transaction logs. After that, i am facing this issue. Also, noticed that before this error started i got one more error;

The SQL Server Network Interface library could not register the Service Principal Name (SPN) for the SQL Server service. Error: 0x2098, state: 15.

I have followed lot of articles, but no luck

Please help. 

Any help would be much appreciated. 

Regards,

Jina.