출처 : https://kb.sos-berlin.com/pages/viewpage.action?pageId=17499564 - 에러메시지 : The TCP/IP connection to the host *****, port **** has failed. Error: "****. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall" - 원인 (출처 참고) 1. 대부분의 경우는..