dejanmarkovic · March 18, 2014 20:42
diff --git a/programs open on non-existing second monitor b/programs open on non-existing second monitor
 Windows has a virtual desktop and some applications "remember" their last location based on that - in your case the PDF reader was last used viewing documents to the right-side of the virtual desktop, now no longer visible as there's no physical screen to display that part.
 (There is nothing to stop an application reporting its location in a non-renderable part of the virtual desktop, this isn't Windows' fault.)

 What you can do is hover over the icon in the task bar, then right-click the preview window (don't bring the jump list up, this will not help) and click Move from the context menu, then hit one of the arrow keys once - now you can move the mouse around the visible portion of the virtual desktop and the window will be stuck to the cursor until you left-click to drop it).

 Source: http://www.msfn.org/board/topic/145986-programs-open-on-non-existing-second-monitor/
	Windows has a virtual desktop and some applications "remember" their last location based on that - in your case the PDF reader was last used viewing documents to the right-side of the virtual desktop, now no longer visible as there's no physical screen to display that part.
	(There is nothing to stop an application reporting its location in a non-renderable part of the virtual desktop, this isn't Windows' fault.)

	What you can do is hover over the icon in the task bar, then right-click the preview window (don't bring the jump list up, this will not help) and click Move from the context menu, then hit one of the arrow keys once - now you can move the mouse around the visible portion of the virtual desktop and the window will be stuck to the cursor until you left-click to drop it).

	Source: http://www.msfn.org/board/topic/145986-programs-open-on-non-existing-second-monitor/