Troubleshoot Wifi Settings on a Mac Computer

1. Restart Devices

• Restart your Mac and Wi-Fi router to refresh network settings and IP assignments. 

2. Check Wi-Fi Status

• Click the Wi-Fi icon in the menu bar to ensure Wi-Fi is turned on.
• If it’s off, turn it on and try reconnecting.

3. Use Wireless Diagnostics

• Hold the Option key and click the Wi-Fi icon.
• Select Open Wireless Diagnostics and follow the prompts to analyze your connection.

4. Forget and Reconnect to Network

• Go to System Settings > Network > Wi-Fi.
• Click Details next to your network and choose Forget This Network.
• Reconnect by entering the password.

5. Renew DHCP Lease

• In System Settings > Network > Wi-Fi, click Details.
• Under TCP/IP, click Renew DHCP Lease to refresh your IP address. 

6. Create a New Network Location

• Go to System Settings > Network.
• Click the Location dropdown > Edit Locations > + to create a new one.
• Apply and test the new location.

7. Reset PRAM/NVRAM and SMC

• Shut down your Mac.
• Turn it on and immediately press Option + Command + P + R for 20 seconds.
• For Intel Macs, reset the SMC by following Apple’s instructions. 

8. Update macOS and Security Software

• Go to System Settings > General > Software Update.
• Install any available updates for macOS and third-party security apps. 

9. Check Router and ISP

• Ensure your router firmware is up to date.
• Try connecting to a different network to rule out ISP issues.