具體解決方案參考的
to solve it I opened two windows thru remote desktop
then i disconnected the connection which was having blank desktop.
then in the other connection where i was able to see all icons on desktop i opened Terminal services manager.
Here there were two instances running
one was in disconnected status and other logedin status.
now for the instance in disconnected status; i right clicked and logged off.
now the problem is solved :D
簡言之,就是建立多個遠程連接到該機器(已經連不上了爲毛還要建立多個,無論直接試試),結果然的有一個連接看到桌面了,而後啓動任務管理器,把別的都註銷掉,就OK了。