This warning can occur, or a student can be kicked from an ongoing exam when a student uses their device with a three-finger swipe, either accidentally, or in an attempt to access another application running in the background. This can also occur if they use the ALT/TAB key combination. Respondus is designed to prevent cheating during exams.
Some students will sometimes do this to cheat on their exams... but it can also be an innocent mistake on the part of the student.
Here is how the Respondus LockDown Browser handles this.
* During an exam attempt, the 1st time a student switches away and accesses another app (and it takes focus), then returns to LockDown Browser, they get a warning pop-up not to do it again or the browser will shut down.
This is by design, in order to avoid false positives.
* The second time a student switches away and returns to LockDown Browser, LockDown Browser shuts down.
If this occurs, the instructor receives a message in their dashboard that the student exited the exam early.
You will need to contact your instructor directly to be granted another attempt on your exam.