Package Manager Console “provider: SQL Network Interfaces, error: 26 – Error Locating Server/Instance Specified” hatası

Bir yazılım projesi  için Entity Framework Code First migration uygulamamam gerekti ancak Package manager console’da “Update-Database” komutunu çalıştırınca aşağıdaki hatayı aldım. A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that…