How to resolve the issue of remote call failure in SQL Server service.

To address the issue of remote calls failing with SQL Server service, you can try the following methods:

1. Check the firewall settings to ensure that the SQL Server service port (usually 1433) is open in the firewall to allow remote access.
2. Check network connectivity: Make sure the client can successfully connect to the SQL Server database server. You can try using the ping command to check if the network connection is working properly, or use the telnet command to see if you can connect to the service port of the SQL Server.
3. Check the SQL Server configuration to ensure that remote connections are allowed. You can verify if the TCP/IP protocol is enabled and the IP address being listened to is configured correctly in the SQL Server Configuration Manager.
4. Check SQL Server login permissions: Make sure the login account being used has the permission to remotely connect to SQL Server. You can verify the permission settings of the login account in SQL Server Management Studio to ensure it has remote connection permission.
5. Check the SQL Server instance name: If SQL Server is using a named instance, make sure to specify the correct instance name in the connection string.
6. Check the network devices: If there are any network devices between the SQL Server and the client (such as routers, switches, etc.), try restarting these devices to ensure the network connection is working properly.

If the above method doesn’t resolve the issue, you can check the error log of SQL Server to understand detailed error information, or try using another tool for remote connection to determine the specific cause of the problem.