https://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2012/11/25/howto-remove-skype-from-windows-taskbar-keep-as-taskbar-tray-icon.aspxAn annoying feature of Skype of recent Skype versions is that by default it shows an icon on the Windows taskbar apart from the one at the taskbar tray while you’re signed in. This also means it shows in the ALT+TAB key sequence when switching betweenelCommunityServer 2.1 SP3 (Build: 20423.1)