|Product:||SQL Server Notification Services|
|Message:||An attempt to log in to SQL Server failed.|
|This error maps to SQL Server error 18456, which indicates that a given user does not have the appropriate permissions to log in.
The event log entry for this error includes the description of the SQL Server error that triggered it, which looks similar to the following:
Login failed for user <user_name>.</user_name>
|Check that the user name noted in the error message has the appropriate permissions.
For more information, see the topic “Troubleshooting” in Notification Services Books Online.