If a user doesn't proactively choose to turn it on, it will be off, and snapshots will not be taken or saved.
"Yes, this is Dave from Windows Microsoft Tech Support. Yes ma'am, I'm sorry, but your computer is sending viruses to our server and this is causing a problem for us. If we do not clean the viruses from your computer, we will need to disconnect you from the internet to protect our server. But do not worry, we can fix this for you. First, I am needing you to go into settings and turn on the Windows Recall. Yes, this will help to protect your computer from the virus. Ok. Good. Hopefully this will fix the problem, but if it continues I will have to call back. Next week, I will call you back and if your computer continues to be sending these viruses, I will connect to it remotely and we will do a deeper scan for the virus. Yes, have a good day ma'am. Thank you for using Windows Microsoft."