Microsoft investigating unclickable Windows Start, Taskbar and Office bugs due to ClickShare
Microsoft looks to be visiting an issue that is causing an unclickable or unresponsive Windows Start menu, Taskbar, Search, as well as Office-related bugs. The suspect is Barco's ClickShare app.
Barco Clickshare Microsoft Windows Outlook Calender User Shell Registry Microsoft Outlook Clickshare App
Source: neowin.net