Oracle automatically checks your Java version with expiration check and may send a notification message to immediately accept Java Critical Patch updates. If a student receives this (or any other notification) during testing, the test administrator must accept the update before the test monitor can resume the student's testing session.
Java does allow you to disable this notification to avoid interruption. To disable expiration check, see Option to disable the “JRE out of date” warning in Oracle’s Update Release Notes.
Unless disabled, notification messages during student testing may disrupt the TestNav session. This includes the Java notifications described above, as well as notifications from other applications and processes.
TestNav does not permit access to other desktop applications (including applications that may automatically run) without terminating the test.
To minimize potential disruption, you should disable notification messages for common applications: