Window's Show desktop troubleshooting

Somehow, my windows laptop's show desktop stopped working. And then here is what I did to make it work again:

1) Open notepad and create a file in any location with the name "Show desktop.scf". In my case, I created it in c:/windows folder. (Though it is not compulsory).

C:\WINDOWS>cat "Show desktop.scf"
[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop

2) Once file is created, open the folder which contains this file and then drag-and-drop this file to "Quick launch" toolbar.

Now I was able to use "Show desktop" again :-)