Step 1: Determine the Scope
Before doing anything else, answer this question: do other devices on the same WiFi also have no internet?
| What's Happening | Likely Cause | Where to Start |
|---|---|---|
| All devices: connected but no internet | Router WAN failure or ISP outage | Check modem LEDs, then router |
| One device: connected but no internet | Device-side DNS, IP, or network profile issue | Device fixes below |
| Websites won't load but apps work | DNS failure only | Change DNS settings |
| Nothing works on any device | ISP outage or modem failure | Check modem WAN LED |
Fix 1: Check Your Modem's WAN LED
Look at the physical modem (the box that connects to your coax or phone line — not the router). Find the LED labeled "Internet", "WAN", or "Online".
- Green/white solid: Modem has internet connection — problem is in your router or device
- Red or off: Modem has lost its connection to your ISP — problem is your ISP line or the modem itself
- Blinking rapidly: Modem is trying to reconnect — wait 2 minutes, then check again
If the WAN LED is red or off, unplug your modem for 60 seconds and plug it back in. If it stays red after 5 minutes, contact your ISP — the problem is on their side.
Fix 2: Restart Router and Modem (in the right order)
- Unplug the modem's power cord
- Unplug the router's power cord
- Wait 60 seconds
- Plug the modem back in first — wait until WAN LED turns solid green (about 2 minutes)
- Then plug the router back in and wait 1 minute
- Test internet on your devices
Order matters. The router needs to get a valid IP from the modem, which requires the modem to be fully online first.
Fix 3: DNS Failure (Websites Won't Load, Apps Still Work)
If apps that connect by IP address (like Spotify or YouTube) work but websites won't load in a browser, the problem is DNS — your device can connect but can't resolve domain names to IP addresses.
Change your DNS to a public server:
- Windows: Settings → Network → your WiFi connection → DNS → Manual → IPv4: 1.1.1.1 and 8.8.8.8
- Mac: System Settings → Network → WiFi → Details → DNS → add 1.1.1.1 and 8.8.8.8
- iPhone: Settings → WiFi → tap (i) → Configure DNS → Manual → add 1.1.1.1
- Android: Settings → WiFi → long-press your network → Modify → Advanced → DNS: 1.1.1.1
Then flush DNS cache on Windows by opening Command Prompt and running: ipconfig /flushdns
Fix 4: IP Address Conflict (169.254.x.x)
If your device shows a 169.254.x.x IP address under its network settings, it failed to get a valid IP from your router's DHCP server. This self-assigned address cannot route internet traffic.
On Windows — open Command Prompt as administrator and run:
ipconfig /release ipconfig /flushdns ipconfig /renew
If this doesn't assign a valid IP (192.168.x.x or 10.x.x.x), reboot your router. If the problem persists, your router's DHCP lease pool may be full — log into the router admin panel and increase the DHCP address range or reduce the lease time.
Fix 5: Network Profile Issue (Forget and Reconnect)
A corrupted saved network profile can cause "connected but no internet" on a specific device even when the connection was working before.
- Windows: Settings → Network → WiFi → Manage known networks → Forget your network → reconnect fresh
- Mac: System Settings → Network → WiFi → Details → Forget This Network
- iPhone: Settings → WiFi → tap (i) next to your network → Forget This Network
- Android: Settings → WiFi → long-press the network → Forget
Fix 6: Reset Network Stack (Windows)
If nothing else works on Windows, a full network stack reset resolves most "connected but no internet" issues caused by corrupted TCP/IP settings:
netsh winsock reset netsh int ip reset ipconfig /release ipconfig /flushdns ipconfig /renew
Run each command in Command Prompt (opened as administrator), then restart your PC.
Fix 7: Captive Portal Not Dismissed
On hotel, café, school, or office networks, a captive portal page requires you to accept terms before internet access is granted. If this page never appeared, try opening a browser and navigating to any website — the portal should redirect you. If it doesn't appear, try navigating to http://neverssl.com (plain HTTP), which forces captive portal detection.
Frequently Asked Questions
Why does my WiFi say connected but no internet?
Either your router lost its WAN connection to your ISP, your device failed to get a valid IP address from DHCP, DNS is failing to resolve domain names, or your device has a corrupted network profile. Check whether all devices are affected — if so, the problem is the router or ISP. If just one device, the fix is on that device.
How do I fix WiFi connected but no internet on Windows?
Run Command Prompt as administrator and execute: netsh winsock reset, netsh int ip reset, ipconfig /release, ipconfig /flushdns, ipconfig /renew — then restart. Also try changing DNS to 1.1.1.1 in your adapter settings.
Why does my phone say connected to WiFi but no internet?
Most likely a stale network profile or DNS issue. Forget the network and reconnect fresh. If other devices on the same WiFi have internet, the problem is your phone's saved profile. If nothing has internet, reboot your router.
What does the 169.254.x.x IP address mean?
Your device failed to receive a valid IP from your router's DHCP server and assigned itself a fallback address. Run ipconfig /release and ipconfig /renew on Windows, or reboot your router if multiple devices show this.
How do I check if my ISP is having an outage?
Check your modem's WAN LED — if it's red or off, your ISP connection is down. Check your ISP's status page or search Downdetector for recent reports from your area.