Kardip, thank you for your suggestion but no, I am not going to change all my settings to default and start again. I use my computer to do interesting things with, not to spend all my time fiddling with settings. Also, the settings I want to change are secondary, even though important. I am adding email addresses to the Allowed Senders and Blocked Senders lists, and I have absolutely zero confidence that anything is actually changing. I am a highly analytical thinker. If I never receive a prompt for confirmation, logic tells me that the changes I think I have made will never come into effect. My logic is based on the assumption that Kaspersky Internet Security is based on logic, ie that Kaspersky Internet Security would not include a prompt for confirmation if the software was never actually going to send a prompt for confirmation. Putting all that into a positive statement, logic tells me that Kaspersky Internet Security includes a prompt for confirmation because the software will always send a prompt for confirmation. The only question is when Kaspersky Internet Security will send the prompt for confirmation. Given that I have never, ever received a prompt for confirmation from Kaspersky Internet Security, I can only conclude that Kaspersky Internet Security is not based on logic. I am hoping you can tell me whether or not the changes I think I am making to the Allowed Senders and Blocked Senders lists are actually coming into effect. Note, of course, that if my changes are actually coming into effect then the conclusion is exceptionally clear: Kaspersky Internet Security is not based on logic.