Disabling Windows 10 messages in ppt presentation mode

[yoel]

Hi,
After upgrading to Windows 10 on a new computer (Thinkpad X1 Carbon), I receive messages that intrude on presentations (ppt professional plus 2016). It is quite embarrassing having students and audiences receive messages about the state of my icloud, or questions whether I wish to connect to this or that network.
There must be some simple way to fix this but anything I have tried has failed.
Can anyone let me know how to stop anything from intruding on a presentation mode?


Thanks