I have this problem lately both in InDesign CC 2017 and Illustrator CC 2017 where the shortcut to use the hand tool with the space bar stops working. It will be working fine and then all of a sudden it just stops.
I've tried quitting InDesign or Illustrator when it happens and reloading the app but that doesn't work. The only thing that works to get that shortcut back is to reboot my whole computer.
I have the same problem. But the cursor works again when I restart InDesign. I don't need to restart.
It's often a conflict with another application, for example Chrome. After you restart, don't open any other applications. Does it work ok? Pay attention as you open additional applications to see which one is causing the conflict.