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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) Code=-2146232060 Proc= Line=0 Inner ex=The system cannot find the file specified Stack Trace= at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at HSP.Models.CSQL.OpenConnection() in D:\HSP\Live\HSP\Models\CSQL.cs:line 79 Source=.Net SqlClient Data Provider ******** Dump of Http Request ******** Request.Params... ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw ALL_HTTP=HTTP_CONNECTION:close HTTP_ACCEPT:*/* HTTP_ACCEPT_ENCODING:gzip, br, zstd, deflate HTTP_COOKIE:ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw HTTP_HOST:www.heatingspareparts.com HTTP_USER_AGENT:Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; com patible; ClaudeBot/1.0; +claudebot@anthropic.com) ALL_RAW=Connection: close Accept: */* Accept-Encoding: gzip, br, zstd, deflate Cookie: ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw Host: www.heatingspareparts.com User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compati ble; ClaudeBot/1.0; +claudebot@anthropic.com) APPL_MD_PATH=/LM/W3SVC/2/ROOT APPL_PHYSICAL_PATH=D:\inetpub\wwwroot\HSP\ AUTH_TYPE= AUTH_USER= AUTH_PASSWORD= LOGON_USER= REMOTE_USER= CERT_COOKIE= CERT_FLAGS= CERT_ISSUER= CERT_KEYSIZE=256 CERT_SECRETKEYSIZE=2048 CERT_SERIALNUMBER= CERT_SERVER_ISSUER=C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2 CERT_SERVER_SUBJECT=CN=www.heatingspareparts.com CERT_SUBJECT= CONTENT_LENGTH=0 CONTENT_TYPE= GATEWAY_INTERFACE=CGI/1.1 HTTPS=on HTTPS_KEYSIZE=256 HTTPS_SECRETKEYSIZE=2048 HTTPS_SERVER_ISSUER=C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2 HTTPS_SERVER_SUBJECT=CN=www.heatingspareparts.com INSTANCE_ID=2 INSTANCE_META_PATH=/LM/W3SVC/2 LOCAL_ADDR=217.154.32.159 PATH_INFO=/boiler-diagrams/product/11284/217582 PATH_TRANSLATED=D:\inetpub\wwwroot\HSP\boiler-diagrams\product\11284\217582 QUERY_STRING= REMOTE_ADDR=216.73.216.28 REMOTE_HOST=216.73.216.28 REMOTE_PORT=49966 REQUEST_METHOD=GET SCRIPT_NAME=/boiler-diagrams/product/11284/217582 SERVER_NAME=www.heatingspareparts.com SERVER_PORT=443 SERVER_PORT_SECURE=1 SERVER_PROTOCOL=HTTP/1.1 SERVER_SOFTWARE=Microsoft-IIS/10.0 URL=/boiler-diagrams/product/11284/217582 HTTP_CONNECTION=close HTTP_ACCEPT=*/* HTTP_ACCEPT_ENCODING=gzip, br, zstd, deflate HTTP_COOKIE=ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw HTTP_HOST=www.heatingspareparts.com HTTP_USER_AGENT=Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeB ot/1.0; +claudebot@anthropic.com) Server Variables... ALL_HTTP=HTTP_CONNECTION:close HTTP_ACCEPT:*/* HTTP_ACCEPT_ENCODING:gzip, br, zstd, deflate HTTP_COOKIE:ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw HTTP_HOST:www.heatingspareparts.com HTTP_USER_AGENT:Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; com patible; ClaudeBot/1.0; +claudebot@anthropic.com) ALL_RAW=Connection: close Accept: */* Accept-Encoding: gzip, br, zstd, deflate Cookie: ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw Host: www.heatingspareparts.com User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compati ble; ClaudeBot/1.0; +claudebot@anthropic.com) APPL_MD_PATH=/LM/W3SVC/2/ROOT APPL_PHYSICAL_PATH=D:\inetpub\wwwroot\HSP\ AUTH_TYPE= AUTH_USER= AUTH_PASSWORD= LOGON_USER= REMOTE_USER= CERT_COOKIE= CERT_FLAGS= CERT_ISSUER= CERT_KEYSIZE=256 CERT_SECRETKEYSIZE=2048 CERT_SERIALNUMBER= CERT_SERVER_ISSUER=C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2 CERT_SERVER_SUBJECT=CN=www.heatingspareparts.com CERT_SUBJECT= CONTENT_LENGTH=0 CONTENT_TYPE= GATEWAY_INTERFACE=CGI/1.1 HTTPS=on HTTPS_KEYSIZE=256 HTTPS_SECRETKEYSIZE=2048 HTTPS_SERVER_ISSUER=C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2 HTTPS_SERVER_SUBJECT=CN=www.heatingspareparts.com INSTANCE_ID=2 INSTANCE_META_PATH=/LM/W3SVC/2 LOCAL_ADDR=217.154.32.159 PATH_INFO=/boiler-diagrams/product/11284/217582 PATH_TRANSLATED=D:\inetpub\wwwroot\HSP\boiler-diagrams\product\11284\217582 QUERY_STRING= REMOTE_ADDR=216.73.216.28 REMOTE_HOST=216.73.216.28 REMOTE_PORT=49966 REQUEST_METHOD=GET SCRIPT_NAME=/boiler-diagrams/product/11284/217582 SERVER_NAME=www.heatingspareparts.com SERVER_PORT=443 SERVER_PORT_SECURE=1 SERVER_PROTOCOL=HTTP/1.1 SERVER_SOFTWARE=Microsoft-IIS/10.0 URL=/boiler-diagrams/product/11284/217582 HTTP_CONNECTION=close HTTP_ACCEPT=*/* HTTP_ACCEPT_ENCODING=gzip, br, zstd, deflate HTTP_COOKIE=ASP.NET_SessionId=zzzeh4553cbm2ozq355e2xhw HTTP_HOST=www.heatingspareparts.com HTTP_USER_AGENT=Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeB ot/1.0; +claudebot@anthropic.com) ******** End of Http Request Dump ******** ******** Dump of Session Variables ******** CallerIP=216.73.216.28 IPBlocked=N UserLocation=216.73.216.28, Columbus, Ohio, United States of America, US IPBlockChecked=Y CurrentPageTitle=Ideal Sprint 80FP (Boiler Assembly 1)Diagram | Heating Spare Parts DiagMistake=I think there is an error in the Boiler Assembly 1 diagram for Ideal Sprint 80FP... ******** End of Session Variables Dump ******** ******** Start of Stack Trace ******** D:\HSP\Live\HSP\Models\DBUtils.cs, GetStackTrace: Line 564: Column 17 D:\HSP\Live\HSP\Models\CSQL.cs, OpenConnection: Line 79: Column 25 D:\HSP\Live\HSP\Models\CSQL.cs, ExecuteNonQuery: Line 439: Column 17 D:\HSP\Live\HSP\Models\BoilerDiagramRepository.cs, FindFirstDiagramWithPart: Line 1108: Column 21 D:\HSP\Live\HSP\Controllers\DiagramsController.cs, Product: Line 253: Column 13 ******** End of Stack Trace ********