Ctrl + Shift + Esc : Task Manager
Win : Toggle Start
Win + A : Toggle Action Center
Win + B : Set focus on the notification area.
Win + C : Open Cortana.
Win + D : Toggle Desktop
Win + E : Open File Explorer
Win + F : Open Feedback Hub and take a screenshot.
Win + G : Open Game bar when a game is open.
Win + H : Start Dictation
Win + I : Open Settings
Win + K : Open Connect
Win + L : Lock Screen
Win + M : Minimize all windows
Win + Shift + M : Restore Minimized windows.
Win + O : Lock device orientation.
Win + P : Open Screen Project
Win + R : Open Run
Win + S : Open Search
Win + T : Set focus on apps of taskbar.
Win + V : Open Clipboard
Win + X : Open Quick Link
Win + . : Open emoji panel.
Win + ; : Open emoji panel.
Win + , : Temporarily peek at the desktop.
Win + # : Open No# of app of taskbar.
Win + Shift + # : Open new instance of No# of app of taskbar.
Win + Ctrl + # : Switch between windows of No# of app of taskbar.
Win + Alt + # : Open menu of No# of app of taskbar.
Win + Ctrl + Shift + # : Open No# of app of taskbar as administrator.
Win + Tab : Open task view.
Win + Shift + S : Take a screenshot of part of your screen.