
It is by nature that Virus detectors can construe the act of installing software as some Virus activity. If you have anything such as a Virus detector running it will turn them off. * In addition to "Repairing Permissions" (if using El Capitan), It cleans out Cache Files and reorganizing Logs (called running a "CRON" procedure), it turns off all third party extensions, plugins, control panels and, System Preferences. Sign in using the password you use to install software. Try quitting all applications and, restart in "Safe-Mode". Renewing the Lease is equivalent to giving Smelling salts to someone passed out. Sometimes the Modem forgets its connection and


Try going to Network Preferences → Advanced → TCP/IP and click on Renew Lease. ② If the above doesn't make a difference. ① How long are you waiting? Try again and wait about another minute. Sometimes, if your connection from your ISP is slow, you may need to wait longer.
