Knowledge Base

An application which uses the SocketTools SMTP client component to submit e-mail messages for delivery fails with error 0x8004274C (10060) or error 0x8004274D (10061). This indicates that the connection has timed out, or was refused by the remote host.

When attempting to run an application that uses one of the SocketTools .NET components, an InvalidOperation exception is generated. If the exception is not handled, a message box will be displayed that contains additional information about the error and then the program terminates.

When attempting to establish a connection using the Secure Shell (SSH) protocol to a server, the connection fails with an error indicating that the connection could not complete. This error affects both the SocketTools SSH component and file transfers using the SFTP (FTP+SSH) protocol.

Attempting to initialize a SocketTools .NET class, ActiveX control or library fails with an error indicating that the networking subsystem cannot be initialized. The application cannot establish a connection, and subsequent attempts to reinitialize the component also fails with the same error message.

When attempting to install SocketTools, an error message is displayed that states IKernel.exe could not be installed. This error typically occurs when an instance of the InstallShield engine is already running or one of the InstallShield components are flagged as read-only.

When attempting to resolve an IPv6 address, either explicitly or by specifying an IPv6 address as the host address when establishing a connection, the method or function fails with an error indicating that the address is invalid. This occurs most commonly on a Windows XP or Windows Server 2003 systems, where the same address can be

When attempting to open a SocketTools example project for Visual Basic 6.0, the error "Class MSComctlLib.ClassName of control ControlName was not a loaded control class" is displayed.

Submitting an e-mail message to a Microsoft Exchange Server is significantly slower than expected, where each message submission can take up to 10 seconds to complete. This problem does not occur when submitting messages to other types of mail servers, including earlier versions of Exchange Server.

The total number of sockets that can be created using the SocketTools controls or libraries varies, based on the version of Windows and the amount of physical memory that is available. It is also important to distinguish between the number of sockets that can be allocated by a client application and the number of inbound connections

When attempting to upload a file to an IIS web server using the HTTP PUT command, the transfer fails with a 404 error. The server administrator had used the IIS Lockdown Tool to secure the server.