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=woa2zlhhcrbrfj4r44zxrpkt ALL_HTTP=HTTP_CONNECTION:close HTTP_ACCEPT:*/* HTTP_ACCEPT_ENCODING:gzip, br, zstd, deflate HTTP_COOKIE:ASP.NET_SessionId=woa2zlhhcrbrfj4r44zxrpkt 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=woa2zlhhcrbrfj4r44zxrpkt 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/10751/473944 PATH_TRANSLATED=D:\inetpub\wwwroot\HSP\boiler-diagrams\product\10751\473944 QUERY_STRING= REMOTE_ADDR=216.73.216.153 REMOTE_HOST=216.73.216.153 REMOTE_PORT=14760 REQUEST_METHOD=GET SCRIPT_NAME=/boiler-diagrams/product/10751/473944 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/10751/473944 HTTP_CONNECTION=close HTTP_ACCEPT=*/* HTTP_ACCEPT_ENCODING=gzip, br, zstd, deflate HTTP_COOKIE=ASP.NET_SessionId=woa2zlhhcrbrfj4r44zxrpkt 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=woa2zlhhcrbrfj4r44zxrpkt 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=woa2zlhhcrbrfj4r44zxrpkt 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/10751/473944 PATH_TRANSLATED=D:\inetpub\wwwroot\HSP\boiler-diagrams\product\10751\473944 QUERY_STRING= REMOTE_ADDR=216.73.216.153 REMOTE_HOST=216.73.216.153 REMOTE_PORT=14760 REQUEST_METHOD=GET SCRIPT_NAME=/boiler-diagrams/product/10751/473944 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/10751/473944 HTTP_CONNECTION=close HTTP_ACCEPT=*/* HTTP_ACCEPT_ENCODING=gzip, br, zstd, deflate HTTP_COOKIE=ASP.NET_SessionId=woa2zlhhcrbrfj4r44zxrpkt 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=216.73.216.153 IPBlocked=N UserLocation=216.73.216.153, Columbus, Ohio, United States of America, US IPBlockChecked=Y PageSize=20 CurrentSearchType=3 AnalyticsData= IsCrawlByBot=Y CurrentPageTitle=Sime Advanced HE 30 ERP (Casing)Diagram | Heating Spare Parts DiagMistake=I think there is an error in the Casing diagram for Sime Advanced HE 30 ERP... ******** 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 ********