If an application freezes or stops responding, you can force it to close using these quick keyboard shortcuts:
On your MacBook: Press and hold ‘Command’ + ‘Option’ + ‘Escape’ at the same time. Select the unresponsive app from the menu and click ‘Force Quit.’
On a Windows Machine: Press ‘Control’ + ‘Alt’ + ‘Delete’, select ‘Task Manager,’ click the unresponsive app, and select ‘End Task.’
Keep this shortcut handy so you can get back to work quickly!