Troubleshoot connecting your Mac to the internet
If you can’t connect your Mac to the internet, try the following suggestions.
Wait a moment, then try again. Your ISP may be having problems. If you continue to have problems, contact your ISP.
Open Network settings and check the status of your network connection services, such as Ethernet or Wi-Fi. Green indicates the service is active (turned on) and connected. Yellow indicates it’s active but not connected. Red indicates the service has not been set up.
Compare your network settings in Network settings with those recommended by your ISP. Make sure you have the latest settings entered in the appropriate fields.
If you’re using PPPoE, make sure nothing is entered in the PPPoE Service Name field (in Network settings for the PPPoE service). If your ISP requires a setting in that field, verify that you’re using the correct information.