What should I do if my Mac computer suddenly cannot connect to WiFi? I have used a Mac for so long. This situation has occurred many times. If this problem is not due to Apple’s wireless network hardware failure, the problem can be solved by troubleshooting. The main solution is caused by the overheating of the router. Start with network congestion, IP address conflicts, system bugs and other aspects. The following editor will introduce you to the detailed solutions, and those who need it will come over!
The first step, restart the Mac wireless network card
Click the wireless network icon at the top of the desktop, click "Turn off Wi-Fi" in the drop-down menu, and then use the same method, click "Wi-Fi: On" in the drop-down menu to restart the wireless network card.
The second step, restart the router
If you leave the router on for a long time, it may cause the router to overheat. You can try to turn off the router, let it stand for a period of time, and then turn on the power of the router. The problem may be solved.
The third step, restart the system
If the problem persists, restart the system and try, and the problem may be resolved.
The fourth step, delete useless wireless networks
Because the wireless network signal is in the same frequency band, it may also cause the problem that the Mac cannot connect to the WiFi. At this time, we can solve this problem by deleting the useless WiFi.
1. Click the wireless network icon at the top and select "Open Network Preferences" from the drop-down menu
2. In the network preferences, enter the "Advanced" option.
3. Select other useless WiFi names and click "—" to delete useless networks.
