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, Error: -1)
Hi @tulasi123 -- So that I ensure I understand, are you having trouble starting the SQL Server engine service through SQL Configuration Manager or only having an issue attempting to connect? Your statement, "I tried all the options such as trying to start the instance through sql server configuration manager and services however could not.", leads me to believe the service is unable to start. Take care.