No Internet / No Network Access
Device says "Connected, No Internet" or no pages load at all
⚠ You may be seeing
- "ERR_NETWORK_CHANGED" or "ERR_NAME_NOT_RESOLVED" in browser
- Yellow exclamation mark on the network icon
- Wi-Fi shows connected but nothing loads
- Other devices on the same Wi-Fi work fine
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1
Run the built-in Network Troubleshooter
Right-click the network icon in the taskbar, then choose Troubleshoot problems. Windows scans for misconfigured DNS, failed DHCP, and adapter faults automatically. Apply every suggested fix before moving on.
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2
Reset the network stack
Open Command Prompt as Administrator (
Win + X → Terminal (Admin)) and run these in order:# Flush stale DNS entries
ipconfig /flushdns
# Reset Winsock (socket layer)
netsh winsock reset
# Reset TCP/IP stack
netsh int ip reset
# Get a fresh IP address
ipconfig /release
ipconfig /renewRestart your PC after running these commands.
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3
Update or reinstall the network driver
Open Device Manager (
Win + X), expand Network Adapters, right-click your Wi-Fi or Ethernet adapter, and choose Update driver. If that doesn't help, try Uninstall device then restart — Windows reinstalls the driver automatically. -
4
Switch to a reliable public DNS
Open Network Connections → Adapter Properties → IPv4 Properties and set:
# Preferred
8.8.8.8
# Alternate
8.8.4.4 -
5
Power-cycle your router and modem
Unplug both devices. Wait a full 30 seconds. Plug the modem in first and wait for it to fully reconnect (all lights steady), then plug in the router. This forces a fresh DHCP lease from your ISP.
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1
Run Wireless Diagnostics
Hold
Optionand click the Wi-Fi icon in the menu bar, then choose Open Wireless Diagnostics. Let it complete the full scan — it identifies interference, authentication issues, and IP conflicts. -
2
Flush DNS cache
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponderEnter your Mac password when prompted.
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3
Renew DHCP lease
Go to System Settings → Wi-Fi → Details (next to your network) → TCP/IP tab → Renew DHCP Lease.
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4
Forget and rejoin the Wi-Fi network
In System Settings → Wi-Fi → Details → Forget This Network, then reconnect and re-enter the password. This clears any corrupted network profile stored on your Mac.
Quick check first: If other devices on the same router also have no internet, the problem is the router or your ISP — not your computer. Skip straight to step 5 (power-cycle) and check your ISP's outage page.