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)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Exception: 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)

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[Exception: 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)]
   Prisma.Framework.DataAccess.DataServices.RunSystemQuery(String SqlQuery) +186
   Prisma.Framework.BaseServices.Filters.GetMainDataForm() +238
   Prisma.Framework.BaseServices.Filters.Init(String DocName, String TreeName, String CatId, Hashtable Parameters, PrismaProfileDef PrismaProfileDef, PrismaUser PrismaUser, Boolean flagFilterSelector, String ObjType, Boolean flagMakeHTML) +222
   Prisma.Framework.BaseServices.Filters..ctor(String DocName, String TreeName, String CatId, Hashtable Parameters, PrismaProfileDef PrismaProfileDef, PrismaUser PrismaUser, Boolean flagFilterSelector, String ObjType) +632
   Utilities.PrismaUtils.LoadDocument(XmlNode xmlDocumentNode) +1956
   Utilities.PrismaUtils.LoadDocumentsXML(XmlNode xmlConfigNode, Boolean returnData) +269
   Utilities.PrismaUtils.LoadDocumentsXML(XmlNode xmlConfigNode) +59
   Multiportal_PrismaPlugin.MultiPrismaPlugIn.RenderXMLDocuments() +196
   Multiportal_PrismaPlugin.PrismaGenericControl.Page_Load(Object sender, EventArgs e) +71
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0