Hi,
First check the Tablet Mode settings by going to Start button, select Settings > System > Tablet mode:
More information here:
Utiliser votre PC comme une tablette (Use your PC like a tablet)
https://support.microsoft.com/fr-fr/help/17210/windows-10-use-your-pc-like-a-tablet
It might also be dependant on your hardware, what hardware are you using?
Best regards,
Leon