Hi @Nopawich Lertjarurnpongsah,
Here are some steps you can follow:
Ensure that the SQL Server instance is configured to accept Windows authentication. You can check this by connecting to the SQL Server instance using SQL Server Management Studio (SSMS) and looking at the server properties.
If the SQL Server instance is running on a cluster, ensure that the necessary resources (such as network name, IP address, and SQL Server instance) have been properly configured in the cluster and are currently online.
Ensure that the SQL Server instance is configured to allow remote connections. You can check this by opening the SQL Server Configuration Manager and verifying that the SQL Server Browser service is running and that TCP/IP is enabled.
Best regards,
Seeya
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