Win-Key + Arrow does not snap windows on Win10
You have to enable Snap from Settings, System -> Multitasking.
If you want to avoid a restart, you can restart the explorer.exe process.
Step by step
- Open Task Manager (Ctrl+Shift+Esc)
- Go to the Details tab
- Kill the
explorer.exe
process.
- In the Task Manager, click
File --> Run new task
- Type in
explorer