macOS Wi-Fi & Network Issues

Common Wi‑Fi symptoms

• Mac won’t connect to Wi‑Fi at all.
• Wi‑Fi connects but internet doesn’t load.
• Frequent disconnects or drops.
• Slow browsing or buffering.
• Wi‑Fi icon shows an exclamation mark.

Step 1 – Toggle Wi‑Fi off and on

This resets the wireless interface and fixes many temporary issues.

1. Click the Wi‑Fi icon in the menu bar.
2. Turn Wi‑Fi Off.
3. Wait 5 seconds.
4. Turn Wi‑Fi On again.

Step 2 – Forget and reconnect to your network

Corrupted network profiles can block connections.

1. Open System Settings.
2. Go to Wi‑Fi → Known Networks.
3. Select your network and click Forget.
4. Reconnect and enter your Wi‑Fi password again.

Step 3 – Restart your router

Routers can freeze or overload, causing slow or unstable Wi‑Fi.

1. Unplug the router’s power cable.
2. Wait 10–15 seconds.
3. Plug it back in and wait for it to fully restart.

Step 4 – Check for interference

Nearby devices can weaken or disrupt Wi‑Fi signals.

• Move away from microwaves, cordless phones, baby monitors.
• Avoid placing the router behind TVs or inside cabinets.
• Try switching between 2.4 GHz and 5 GHz networks.

Step 5 – Run Wireless Diagnostics

macOS includes a built‑in tool that detects Wi‑Fi problems.

1. Hold Option and click the Wi‑Fi icon.
2. Select Open Wireless Diagnostics.
3. Ignore the wizard and go to Window in the menu bar.
4. Use tools like Performance, Sniffer, and Logs to identify issues.

Step 6 – Renew DHCP lease

This refreshes your IP address and fixes many “connected but no internet” issues.

1. Open System Settings.
2. Go to Wi‑Fi → Details.
3. Open the TCP/IP tab.
4. Click Renew DHCP Lease.

Step 7 – Change DNS servers

Slow or failing DNS can make websites load slowly or not at all.

1. Open System Settings.
2. Go to Wi‑Fi → Details → DNS.
3. Add:
   • 8.8.8.8
   • 1.1.1.1
4. Click OK and reconnect.

Step 8 – Reset network settings

Resets all Wi‑Fi, VPN, and network configurations.

1. Open System Settings.
2. Go to General → Transfer or Reset → Reset.
3. Select Reset Network Settings.

Step 9 – Test in Safe Mode

Safe Mode disables extensions and login items that may interfere with Wi‑Fi.

Apple silicon

1. Shut down the Mac.
2. Hold the power button until “Loading startup options”.
3. Select your disk → hold Shift → Continue in Safe Mode.

Intel Macs

1. Shut down.
2. Turn on and hold Shift.
3. Release at login screen.

Step 10 – Create a new network location

This forces macOS to rebuild all network settings.

1. Open System Settings.
2. Go to Network.
3. Click the dropdown next to “Location”.
4. Create a new location and reconnect to Wi‑Fi.

When it might be hardware

• Wi‑Fi disappears completely from the menu bar.
• Bluetooth and Wi‑Fi fail together (shared chip).
• Mac only connects when very close to the router.
• Wi‑Fi works in Windows (Boot Camp) but not macOS.