ولي مشکل من يه جور ديگه هست ببينيد وقتي ميخواد سايت خودمون بالا بياد اين خطا رو ميده تو قسمت کانکشن استرينگ web.config روي هاست هم اين کد رو نوشتم ولي سايت بالا نمياد چرا؟

add name="ConnectionString" connectionString="Data Source=www.domain.ir;Initial >
Catalog=database name;User ID=...;Password=...;" providerName="System.Data.SqlClient"/>
يه هفته اي هست درگير اين خطا هستيم ممنون ميشم هر کي ميدونه راهنماييم کنه
error:
Server Error in '/' Application.



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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)