NET Framework 3.5.1 item (and its subitems). Right now, the only thing that's important is that you place a checkmark on the Microsoft. Then a smaller dialog box will appear with a list of Windows components. When it appears, click the hyperlink on the left sidebar titled, 'Turn Windows features on or off'. In order to do so, go to the Windows Control Panel, and visit the Programs and Features applet. NET Framework 3.5.1 installed and 'turned on'. unless, as I found out today, you also have Microsoft. Now installing that alone won't completely fix the problem. Okay, as I commented earlier, Microsoft claimed to have fixed this issue with KB2688730 at:Īfter visiting this site and providing it my e-mail address, I got a link in an e-mail message from to help me download the actual hotfix: WndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at

T) at .WndProcException(Exception e)Īt .Callback(IntPtr hWnd, Int32 msg, ThreadContext.OnThreadException(Exception This error shows up when launching multiple windows system applications such as: Error showing up in Windows 7 or Windows Server based computers.

Mmc microsoft