For security reasons, we need to make sure you are interacting with only the Duolingo English Test application while you are taking the test. If your mouse cursor leaves the test window, you will receive a warning message. If it leaves the window too frequently or for too long, your test will be cancelled and you will need to retake it from the beginning. This will also use up one of the attempts on your test credit.
Be sure to keep your mouse cursor within the test window at all times. Do not touch the edges of the window with the cursor or move it too far out of the way when you are not using your mouse.