Check the WiFi range. If the WiFi is not working on your Mac, check if the Mac is within range of a WiFi network. Should you experience a poor connection, try moving closer to the router itself. If that does not work, the next step is to check your WiFi connection on another device, such as a phone or laptop.
Look at the WiFi icon on your Mac's menu bar to check the status of your wireless connection. If the icon has a line across it, if its color is faded, or it's showing an exclamation mark — those are all indicators that WiFi is either off, not associated with a network, or there's no internet. If your Mac is still not connecting to any Wi-Fi network in the macOS recovery menu, shut it down (hold the power button till it goes off) and restart it normally. Afterward, reset the Wi-Fi settings.

Wifi do not connect When MAC book is looking for wifi network all the time and do not connect. The best 100% solution is to remove the wifi component from Network preference and others like blue tooth etc. Then add wifi only and it will work. Only renewing and re-joining wifi will not work.

1. Check where the problem lies Suppose your Mac is connected to your home or office Wi-Fi, but the internet isn't working. Before moving to the fixes, it is essential to know whether the issue is with the particular network or your computer. To check this, connect any other device like your phone to the same Wi-Fi and try visiting a website. Restart your router 3. Use macOS Wireless Diagnostics 4. Disable or Modify Bluetooth 5. Delete and re-add your WiFi connection preferences 6. Turn-off your Mac's Firewall 7. Delete your System Configuration file 8. Check your DNS settings 9. Check your TCP/IP settings 10. Repair your Keychain passwords 11. Check if the WiFi network is closed 12. IT2b. 461 386 189 254 414 104 442 246 270

mac not working on wifi