Connection error to SqlServer

When opened my table :
Unspecified error
(MS Visual Database Tools)

what is this error?

please help me.

Please give more details about what you are doing when you encounter this error.

Mike

|||when I opened Microsoft SQL Server Managment Studio (Express Edition) and choose a table to open (by right click on it and select open table) this error message was appeared.
here is the detailed error:

===================================

Unspecified error
(MS Visual Database Tools)

Program Location:

at Microsoft.VisualStudio.DataTools.Interop.IDTTableDesignerFactory.BrowseTable(Object dsRef, Object pServiceProvider)
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.OpenTableNode.CreateDesigner(IDTDocToolFactoryProvider factoryProvider, IVsDataConnection dataConnection)
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDataDesignerNode.CreateDesigner()
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDataDesignerNode.Open()
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VirtualProject.Microsoft.SqlServer.Management.UI.VSIntegration.Editors.ISqlVirtualProject.CreateDesigner(Urn origUrn, DocumentType editorType, DocumentOptions aeOptions, IManagedConnection con)
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.ISqlVirtualProject.CreateDesigner(Urn origUrn, DocumentType editorType, DocumentOptions aeOptions, IManagedConnection con)
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDocumentMenuItem.CreateDesignerWindow(IManagedConnection mc, DocumentOptions options)

And

when i draw diagram for my database, this error message was appeared:
-
A connection was successfully established with the server, but then an error occurred during the login process. (provider: TCP Provider, error: 0 - An established connection was aborted by the software in your host machine.) (.Net SqlClient Data Provider)|||

This seems like a problem specific to Management Studio Express so I'm going to move this thread to the tools forum.

Mike

|||I could not find solution for error that send to last posts and

Other part of error when right click on server name and select properties :
-
A connection was successfully established with the server, but then an error occurred during the login process. (provider: TCP Provider, error: 0 - An established connection was aborted by the software in your host machine.) (.Net SqlClient Data Provider)