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Sometimes the device is fine — your router is the problem.
Wi-Fi drops are frustrating, especially when you're in the middle of work or a video call. The good news: most disconnections are software-based and fixable without hardware replacement. Let's troubleshoot systematically.
Corrupted network settings cause frequent disconnects. Forgetting the network clears cached credentials and forces a fresh connection.
Go to System Settings → Wi-Fi → click the info icon next to your network name → Forget This Network. Wait 10 seconds, then reconnect by selecting the network and entering your password fresh.
DHCP assigns your MacBook an IP address. A stale or conflicting lease causes disconnects.
Go to System Settings → Wi-Fi → Details (next to your connected network) → TCP/IP → Renew DHCP Lease. Your Mac will request a fresh IP address from the router.
Your router's default DNS can be slow or unstable. Switching to a public DNS (like Google's 8.8.8.8 or Cloudflare's 1.1.1.1) sometimes resolves disconnect issues.
Go to System Settings → Wi-Fi → Details → DNS → click the + button and add 8.8.8.8 and 8.8.4.4 (Google DNS). Click OK and test.
Wi-Fi driver bugs are fixed regularly in macOS updates.
Go to System Settings → General → Software Update. Install any available updates and restart. Test Wi-Fi stability after the update.
macOS has a built-in network diagnostic tool that identifies connection issues.
Hold Option and click the Wi-Fi icon in the menu bar → Diagnostics. Follow the prompts and review the results for "Recommended Actions" related to Wi-Fi.
2.4 GHz Wi-Fi (older networks) is susceptible to interference from microwaves, Bluetooth devices, and cordless phones. Modern 5 GHz networks are more stable.
In System Settings → Wi-Fi, check which band your network is using. If only 2.4 GHz is available, ask your router admin to enable 5 GHz, or move closer to the router to improve signal strength.
Your MacBook may be aggressively cutting power to the Wi-Fi card to save battery. This causes disconnects.
This setting isn't directly visible in newer macOS versions, but you can check Activity Monitor. Open Activity Monitor → search for "kernel_task" and note its CPU usage when Wi-Fi drops. If spiking, power management is active. Try adjusting Energy Saver settings: Go to System Settings → Battery (or Energy Saver) and disable aggressive power saving if available.
Connect to a different Wi-Fi network (mobile hotspot, café, friend's house). If you disconnect from multiple networks equally, it's a MacBook issue, not the router. If you only disconnect from your home network, the router needs troubleshooting.
If you've done all the above and still disconnect constantly, the Wi-Fi antenna or its connection to the logic board might be faulty. Warning signs:
Hardware antenna repair requires opening the MacBook and potentially replacing the Wi-Fi card or antenna assembly. Repair cost: $150–$300.
If DIY repair isn't for you, our certified technicians can fix it fast.
Start a Mail-In Repair →Most Wi-Fi drops are software-based: corrupted network settings, a stale DHCP lease, unstable DNS, an outdated macOS Wi-Fi driver, or 2.4 GHz interference from microwaves and Bluetooth devices. Forgetting and rejoining the network, renewing the DHCP lease, and switching to public DNS like 8.8.8.8 fix most cases without any hardware repair.
Connect to a different network such as a mobile hotspot, cafe, or friend's house. If the MacBook drops connections on multiple networks equally, the laptop itself is the problem; if it only disconnects on your home network, the router needs troubleshooting instead.
Hold the Option key and click the Wi-Fi icon in the menu bar, then choose Diagnostics. Follow the prompts and review the Recommended Actions in the results; macOS's built-in tool identifies most connection issues automatically.
Hardware warning signs include only 1-2 bars of signal even right next to the router, disconnects near certain objects (an antenna shielding fault), and restarts that fix things for just a few minutes before drops return. Antenna or Wi-Fi card repair requires opening the MacBook and typically costs $150-$300.