Internet Broadcast Preflight Check
The preflight check will test your computer to ensure it has everything it needs to give you an optimal viewing experience. There are two tests in the preflight check. The first test will check your computer's software and settings and the second test will check that you can receive video and audio streams on your computer.
If there is something wrong or software missing from your computer, the preflight check will identify the problem and suggest ways to resolve it.
to start the test.