Till 2015 and earlier versions of Skype for Business and Lync, keyboard shortcut:
+ Y
used to bring up the application window with the focus in search box. After upgrading to Office 2016, the above mentioned shortcut does not work. Has this shortcut been changed to something else?
Ctrl+Alt+Shift+3
work for you? – StymieCtrl+Alt+Shift+3
? – Germinant