Desktops v2.0
Download Desktops v2.0 from MIcrosoft’s Windows Sysinternals site. Sysinternals was once a third-party collection of tools, but the Sysinternals tools are so useful and powerful that Microsoft bought them all a few years ago.
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The first time you switch to a virtual desktop, Windows will “create” it — it’s loading a new copy of Explorer.exe for that desktop. Windows you open on other desktops won’t appear to be open on your other desktops, so you can’t switch to them with the taskbar or Alt+Tab. You’ll have to switch back to their associated desktop first.
Each desktop also has its own separate system tray — so system tray icons from your first desktop won’t appear on your other desktops. If you open an application on your second desktop and it loads a system tray icon, that system tray icon will only appear in the system tray on your second desktop, and not your first, third, or fourth desktops.
Fonte Desbloquear desktops virtuais no Windows 7 ou 8 com esta ferramenta Microsoft
Capturas de tela e mais informações no link de referência acima.
Soluções alternativas
Para outras opções, consulte Os 3 principais gerenciadores de área de trabalho gratuitos para Windows 8/7