Change the default Check-in Action of Visual Studio 2010

Changing the default check-in Action should be fairly simple, an option under Source Control, but it's not. In order to accomplish that, you have to change a registry key...

HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\10.0\TeamFoundation\SourceControl\Behavior

change @ResolveAsDefaultCheckinAction to 'False'

from Stack Overflow answer