hi there, thanks for the reply. i checked the incompatible apps list and confirm that i have none of them. I also went through the checklist of If Kaspersky Internet Security for Mac functions incorrectly: Restart the application. If the issue persists, try rebooting your Mac. If this doesn’t help, reinstall Kaspersky Internet Security for Mac. finally i removed the kis using “appcleaner” app/ This helped me to remove some of the remaining bits of it too. Having some general knowledge with computers i started thinking that it might be a issue with a hanging process. what do you think?