I still run KART For Business 4.0. The last Kaspersky version that doesn't require email validation because their servers have been blacklisted in the US.TY for the response. Allow me to ask this another way. Concerning Kaspersky and the USA. Kaspersky is not allowed to run in the USA, their servers are kaput. NO other antivirus who uses the Kaspersky engine is allow either. So that was why I asked about Kaspersky working via Polar. Even the Kaspersky offline scanner is not functional, unless you sidestep the ban with a VPN.