Ctrl Break is the correct Hot Key if you have the VB Profile applied. However, if you have the MsgBox in a Console Application, Ctrl Break will actually work as Stop Debugging. This is because of an issue with the way the Hosting Process is processing this keystroke combination.
It it definitely going to be revisited for a fix in the next version of Visual Studio
For now, you can use Debug.Pause as noted in a previous post
Should be exactly the same, albeit the actual hot key may not be the same. Debug -> Pause should drop you there either immediately or right after you click a dialog button. You can change key bindings by going to Tools -> Options -> Environment -> Keboard -> Debug.BreakAll
Ctrl-Break?
Lynda Webeler
It it definitely going to be revisited for a fix in the next version of Visual Studio
For now, you can use Debug.Pause as noted in a previous post
thanks
InKi Park