A network-related or instance-specific error occurred while establishing a connection to SQL Server

Problem: cannot connect to server a network related or instance-specific error 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 the instance name is correct and that SQL Server is configured to allow remote connections. Provider: SQL Network Interfaces, error: 26 - Error Locating Server/instance Specified) (Microsoft SQL Server) Solution: This can be because only the SQL Server Management Studio is installed and not SQL Server. Therefore, go to this link or here to search SQL Server as you require. Then download and install SQL Express: 32 bits - Download "ENUx86SQLEXPR_x86_ENU.exe" 64 bits - Download "ENUx64SQLEXPR_x64_ENU.exe" Watch the video to resolve the issue. Hafeez Computers Thakot HCT Javed Ikram #SQLserver RDLC Tablix sum error | visual Studio | Report error C# how to add Microsoft RDLC Report Designer in Visual Studio C( RDLC file open in XML code Solved)