I'm using Kaspersky Internet Security version 21.3.10.391 (i) on my Windows 11 PC with version 21H2 x64 Build 22000.613
This wasn't always the case, but Windows' own programs, like the updater and the mail program, are unable to access the internet when Kaspersky Internet Security is on. I have to exit the application completely in order for the Mail program and the Windows updater to work.
I do use the Firewall functionality of KIS but I'm not sure where to look for Windows blocking entries.
Is there any other area I should look into besides Firewall blacklists to find the problem?