I am having a connection issue with my Mac, the following error messages are displayed:
Airport is does not have an IP address and cannot connect to the internet , followed by Airport has the self-assigned ip address and will not be able to connect to the internet". What can be done?
Go to System Preference > Network
Click on the Setup button at the top go to Edit Configurations
Click the + button to add a configuration. Remove the old configurations using the - button.
Set Airport to the top of the list in the left sidebar (Click on the small gear icon > Set the order of service > drag Airport to the top of the list.
In the left sidebar select: "Wi-Fi"
Then in the right pane:
Network Name > Check if the name of your network is present.
Check the "Request to connect to new networks"
Go to the Advanced tab at the bottom right:
Drag your preferred network at the top of the list.
Delete unnecessary networks clicking on the - button.
check the "Remember the networks....." and clear the other check boxes
Verify that the security mode is properly configured (WPA, WPA2, WEP...depending on your how your access point is configured)