Getting below error "Fortinet" wasn’t installed properly on your computer or the network: Try uninstalling or disabling "Fortinet" Try connecting to another network NET::ERR_CERT_AUTHORITY_INVALID any fixes?
I wonder if this is something to do with Chrome 70+ now rejecting all Symantec SSL certificates. I am unfamiliar with Fortinet, but have you tried updating it or disabling it as Chrome suggests?