We use Outlook 2010 and Lync 2010 and have installed them on our Surface Pro 3 Windows 8.1 builds. When a device comes out of standby and the user unlocks it all the notifications from these two apps are queued and start popping up. This includes phone calls - which can't be answered because the caller hung up whilst the device was in standby.
Why is this happening and what can we do to stop it?
We have enabled "Turn off toast notifications on the lock screen" in Group Policy, but I'm not sure that's relevant.