Hello @FLOOD Kindly find out the answers: MAC operating system version? 10.15.5 Is MAC fully updated? YES When "Firefox, Google Chrome and others application not connecting to the internet", happens, are there any errors? If “yes” may we have images please? Attached Does Safari connect to the internet? Yes its working Has the problem just started or always existed? Since I install KIS its started and if i quiet it Has a check of Applications incompatible with KIS20 for Mac been done? Yes and I dont have any of these application Have KIS been uninstalled and reinstalled according to documented instructions? Yes Thank you