MacBook Pro Wi-Fi Not Working

🔍 Step 1: Identify the Problem

• Wi-Fi won't connect at all: Password issue, incompatible security type, or router problem
• Connected but no internet: DNS issue, DHCP problem, or router/ISP outage
• Frequent drops: Signal strength, interference, or macOS power-saving disconnecting
• Very slow speed: Channel congestion, wrong band (2.4 vs 5 GHz), or Wi-Fi 6E compatibility issue
• Wi-Fi grayed out: Rare software bug or hardware fault — requires restore
• After macOS update: Driver regression — check Apple forums and update again

🔄 Step 2: Basic Restart Fixes

1. Toggle Wi-Fi off and on: Click Wi-Fi icon in menu bar → Turn Wi-Fi Off → wait 10 seconds → Turn Wi-Fi On
2. Restart the Mac: Apple menu → Restart. Clears all network states and daemon processes
3. Restart your router: Unplug for 30 seconds, plug back in. Wait 60 seconds for full restart. Many Wi-Fi issues are router-side
4. Move closer to the router: If the signal is below 2 bars, distance/walls are the issue. Test within 10 feet of the router to eliminate range as a factor

📡 Step 3: Wi-Fi 6E Compatibility (M3/M4 MacBook Pro)

MacBook Pro M3 and M4 models support Wi-Fi 6E (6 GHz band) — but this introduces compatibility considerations:

• 6 GHz band: Much shorter range than 5 GHz — requires being in the same room as the router for reliable connection
• Older routers: Wi-Fi 6E routers have had firmware bugs causing connection drops with Apple devices. Update your router firmware
• If 6 GHz is causing issues: Connect to your 5 GHz network instead (usually named differently in router settings) or disable 6 GHz in your router admin panel temporarily
• Wi-Fi 6 (no E) routers: M3/M4 Macs fall back gracefully — no issue, but update router firmware anyway

🔑 Step 4: Forget and Rejoin the Network

1. Click the Wi-Fi icon in the menu bar
2. Click Wi-Fi Settings → find your network → click the (i) button → Forget This Network
3. Click the Wi-Fi icon again → select your network from the list
4. Enter your password carefully — Wi-Fi passwords are case-sensitive
5. If you don't know the password: check the sticker on your router, or on a connected iPhone go to Settings → Wi-Fi → tap your network → the password shows if Face ID is confirmed

🌐 Step 5: Connected But No Internet

When the Wi-Fi icon shows full strength but websites won't load:

• Test on other devices: If your phone also has no internet, the problem is the router or ISP — not your Mac
• Change DNS: System Settings → Wi-Fi → Details (next to connected network) → DNS tab → add 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare). Click + to add, remove old entries if needed
• Renew DHCP lease: System Settings → Wi-Fi → Details → TCP/IP → Renew DHCP Lease. Forces the router to issue a fresh IP address
• Check for captive portal: Hotel/café networks require opening a browser to sign in. Open Safari and try loading a simple page like apple.com

⚙️ Step 6: Reset Network Settings

This is the most effective fix for persistent Wi-Fi issues on macOS. It removes saved networks, Wi-Fi preferences, and network configurations:

1. Open Finder → Go → Go to Folder → type /Library/Preferences/SystemConfiguration/
2. Move these files to Trash (you may need to authenticate):
   • com.apple.airport.preferences.plist
   • com.apple.network.identification.plist
   • NetworkInterfaces.plist
   • preferences.plist
3. Restart your Mac
4. After restart, reconnect to Wi-Fi and re-enter your password

Alternatively: System Settings → General → Transfer or Reset → Reset → Reset Network Settings (available on newer macOS versions)

🔧 Step 7: NVRAM Reset and macOS Update

• Update macOS: System Settings → General → Software Update. Wi-Fi bugs are among the most commonly fixed in point releases — especially after major macOS upgrades
• NVRAM reset: Shut down → power on → immediately hold Option + Command + P + R for 20 seconds. Clears stored Wi-Fi preferences
• Safe Mode test: Shut down → hold Power → Options → hold Shift → Continue. If Wi-Fi works in Safe Mode, a third-party app is interfering (VPNs, firewall apps, and network monitors are common culprits)

✅ Quick Fix Checklist

• ☐ Wi-Fi toggled off/on and Mac restarted
• ☐ Router restarted
• ☐ Network forgotten and rejoined
• ☐ DNS changed to 1.1.1.1 or 8.8.8.8
• ☐ DHCP lease renewed
• ☐ Wi-Fi 6E issues: connected to 5 GHz instead (M3/M4)
• ☐ NetworkPreferences files deleted and Mac restarted
• ☐ macOS updated to latest version
• ☐ NVRAM reset performed