I was sick of Aero Peek in Win 10 staying visible until you pick one or click on a different app to take focus away, so I found a working solution. Code: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] "ExtendedUIHoverTime"=dword:000186a0 Make the .reg file, copy above in and then save and apply it by double clicking the .reg file.