This update replaces the following hotfixes:
- 2183292 "Failure sending mail" error message when you send an email message by using a .NET Framework 4-based application that uses the "System.Net.Mail.SmtpClient" class if the email attachment is larger than 3 MB
- 2413613 A shortcut menu may appear far away from the mouse pointer when you run a Windows Presentation Foundation application that is based on the .NET Framework 4
- 2298853 Visual Studio 2010 error: "Error 1 error MSB4014: The build stopped unexpectedly because of an internal failure"
- 2461678 A .NET Framework 4-based WPF application crashes if the source object of a data binding in a control is an element that is defined outside the name scope of the control
There are also several other issues that have been resolved in this GDR which are covered here.