Open Explorer With A Single Pane When you use [Windows] + [EI to open a Windows Explorer window, it opens in the two-pane layout. To have it open with a single pane by default, do the following. [£] In the Registry Editor, navigate to HKEY CLASSES ROOT\Folder\shell\ explore\ ddee;Zec [£] Double-cliek on(Default) and change the string to [ViewFolder("%l", %I, %S)] (including the brackets) [£] To revert to the double-pane window, set (Default) to [ExploreFolder("%l", %I, %S)]