Wi-Fi is connected, but there's no internet: 12 reasons and what to do

The situation is familiar to many: the Wi-Fi indicator on the device is on, the network is connected, but pages in the browser won't open, instant messengers won't update, and YouTube videos are endlessly loading. Why is there no internet access via Wi-Fi?What if there seems to be a connection? There could be over a dozen reasons, ranging from trivial errors in the router settings to issues with the ISP.

In this article, we'll look at all possible scenarios: when the router is at fault, when the problem is with the device (smartphone, laptop, Smart TV), and when it's with the provider. You'll receive step-by-step instructions with menu pictures, a symptom table for quick diagnosis, and action checklists. We'll pay special attention to rare cases, such as when the internet only works on certain websites or disappears after a firmware update.

If you are in a hurry, take advantage of it. FAQ at the end of the article, where we've collected answers to the most frequently asked questions. For a more in-depth diagnosis, read the full article: it includes solutions even for more exotic issues like IPv6 conflicts or MAC address blocking.

⚠️ Attention: If you have corporate network (in an office, university, or hotel), some of the solutions in this article may not work due to administrator restrictions. In this case, please contact your organization's support team.

1. Checking basic parameters: router, cables, indicators

Before digging deeper into the settings, make sure the problem isn't just on the surface. Start by inspecting the router and checking the physical connections.

🔹 Indicators on the router will tell a lot:

• 🔴 Power indicator Is the red light off or flashing? The router isn't turned on or the power supply is broken.
• 🟡 WAN/Internet indicator (usually blue or green) blinking but not staying on? No connection to your ISP.
• 🟢 LAN indicators Are the cable ports green? That means the cable from your ISP is connected correctly.
• 📶 Wi-Fi indicator Is the wireless network turned off? The wireless network is disabled in the settings or using the button on the case.

🔧 What to do:

1. Reboot your router (unplug it from the power outlet for 30 seconds).
2. Check if it is inserted tightly cable from the provider to the port WAN (usually highlighted in color).
3. If you use ADSL-modem (with telephone cable), make sure that the connector DSL not damaged.
4. Try connecting the cable directly to your computer (bypassing the router). If the internet works, the problem is with the router.

⚠️ Attention: If after rebooting the router the indicator WAN If the light still doesn't come on, the problem is with your provider. Check your account balance or call support. Some providers (for example, Rostelecom or MTS) block access when the balance is negative, even if money is debited automatically.

2. Problems on the provider's side: how to check and what to do

About 30% of cases where Wi-Fi is connected but there's no internet are due to issues with the internet provider. This could be a scheduled outage or a line failure.

🔍 How to diagnose:

• 📱 Check the service status in personal account provider (sometimes there is a notice about technical work).
• 📞 Call the hotline (the numbers are usually listed on the router sticker or in the contract).
• 🌐 Try opening the provider's website from your phone via mobile InternetIf the site doesn't load, the problem is definitely not yours.
• 📡 Use services like Downdetectorto see mass complaints about your operator.

📌 Typical reasons from the provider's side:

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3. Router settings: what could go wrong

If the ISP is not at fault, the next place to look for the problem is router settingsMost often, internet connection settings, DNS, or MAC address filtering are disrupted.

🛠 How to access router settings:

1. Find out the IP address of the router (usually it is 192.168.0.1 or 192.168.1.1). It can be found on a sticker on the bottom of the device.
2. Enter this address into the address bar of your browser (on a device connected to Wi-Fi or via cable).
3. Enter your login and password (by default it is often admin/admin or admin/password).

⚙ What to check first:

• 🔌 Connection type (WAN): must match what is stated in the contract (usually Dynamic IP, PPPoE, L2TP or PPTP).
• 🔐 Login and password to connect (if used) PPPoE). They can also be found in the contract.
• 🌍 DNS servers: If static addresses are specified (for example, from a provider), try replacing them with public ones: 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).
• 📋 MAC filtering: If enabled, add the MAC addresses of all your devices (you can find them in the network settings on the device).

🔧 Instructions for popular router models:

⚠️ Attention: If you changed the router firmware to a custom one (for example, DD-WRT or OpenWRT), the problem may be due to incompatibility with the provider's hardware. In this case, restore the stock firmware via the recovery menu (usually by holding down the button) Reset when turned on).

4. Device issues: phone, laptop, Smart TV

Sometimes Wi-Fi works on some devices but not on others. This means the problem lies in the settings of the specific device. Let's look at how to diagnose and fix problems on different platforms.

📱 On Android/iOS:

• 🔄 Forget the network and reconnect: Settings → Wi-Fi → [tap on the network] → Forget.
• 📶 Check if it is enabled airplane mode or energy saving (they can turn off Wi-Fi).
• 🔒 Make sure the box is unchecked Avoid bad connections (on Android) or Poor data quality (on iOS).
• 📱 Update your device's firmware: outdated versions may conflict with modern Wi-Fi standards (e.g. Wi-Fi 6).

💻 On Windows 10/11:

1. Open Settings → Network and Internet → Wi-Fi.
2. Click Managing known networks, select your network and click Forget.
3. Restart your laptop and reconnect.
4. If it doesn't help, open it Command line as administrator and run:

   netsh winsock reset
   netsh int ip reset
   ipconfig /flushdns

📺 On Smart TV (Samsung, LG, Sony):

• 🔄 Restart the TV (unplug it from the socket for 1 minute).
• 📶 Check your network settings: Settings → Network → Network settings → Reconnect.
• 🔒 If your TV asks you to enter a password, but you haven't changed it, reset your network settings to factory defaults.
• 📡 On some models Samsung (series QLED 2020-2022) there is a bug with IPv6Try disabling it in your router settings.

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5. IP address conflicts and DHCP issues

One of the most insidious reasons for the lack of internet connection when connected to Wi-Fi is IP address conflict or a malfunction DHCP serversThis happens when the router cannot correctly assign a unique address to the device on the local network.

🔎 How to recognize the problem:

• 📛 The device is assigned an IP address of the type 169.254.x.x (this means that DHCP did not work).
• 🔄 After rebooting the router, the Internet appears, but after a while it disappears again.
• 📱 The internet works on some devices, but not on others.

🛠 How to fix:

1. Reboot your router and device.
2. Manually set a static IP address on the device:
   • On Android: Settings → Wi-Fi → [your network] → Advanced → IP Settings → Static.
   • On Windows: Control Panel → Network and Internet → Network and Sharing Center → Change adapter settings → [your connection] → Properties → Internet Protocol Version 4.

For IP, specify, for example, 192.168.1.100 (if the router address 192.168.1.1), mask 255.255.255.0, gateway - router IP, DNS - 8.8.8.8.

⚠️ Attention: On some routers (for example, Zyxel Keenetic) There's a bug where the DHCP server "freezes" after running for a long time. In this case, the only solution is to reset the settings completely using the button. Reset.

6. Interference and weak Wi-Fi signal: how to strengthen the connection

If the internet connection comes and goes, or the speed drops sharply when you move around the room, the problem may be weak Wi-Fi signal or interference from other devices.

📡 Signs of a weak signal:

• 📶 The device displays 1-2 signal strength bars.
• 🔄 The Internet only works near the router.
• 🎮 Online games or video calls are constantly lagging.
• 📱 Download speed drops in the evening (when neighbors are actively using their networks).

🛠 How to boost the signal:

Change the Wi-Fi channel in the router settings (select the least loaded one in the program) Wi-Fi Analyzer)

Move the router to the center of the apartment, away from walls and metal objects

Disable the router mode 802.11b (leave only 802.11n/ac/ax)

Install a Wi-Fi repeater or mesh system (for example, TP-Link Deco)

Update your router's firmware (older versions may not work well with modern devices) -->

📊 How to choose a free Wi-Fi channel:

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7. Viruses, VPNs, and Firewalls: Hidden Causes of Problems

Sometimes the Internet disappears not because of the router or the provider, but because software on your device. Viruses, a poorly configured VPN, or an overly strict firewall can block network access.

🛡 What to check:

• 🦠 Viruses and malware: Scan your device with an antivirus (for example, Kaspersky or Malwarebytes). Some viruses change DNS settings to their servers.
• 🔒 VPN or proxy: If you use a VPN (eg. NordVPN or ProtonVPN), try disabling it. Sometimes VPN servers are overloaded or blocked.
• 🚧 Windows Firewall/AntivirusTemporarily disable it and check if the internet is back online. If so, add an exception for your browser or network.
• 📱 Parental Control Settings: Your router or device may have a content filter enabled that blocks access to some websites.

🔧 How to reset network settings on Windows:

1. Open Settings → Network & Internet → Status → Network reset.
2. Click Reset now and confirm the action.
3. After rebooting, reconnect to Wi-Fi.

⚠️ Attention: If you use corporate laptop, it can have traffic control software installed on it (for example, Cisco AnyConnect or FortiClient). In this case, please contact your company's IT department—changing the settings yourself may violate your security policy.

8. Exotic reasons: from IPv6 to MTU problems

If you've tried everything but your internet still isn't working, the problem may lie in a rare setting that many people don't know about. Let's look at a few less obvious causes.

🔍 Rare reasons for lack of internet:

• 🌐 IPv6 conflict: some providers (eg Beeline) don't work well with IPv6. Try disabling it in your router settings.
• 📏 Incorrect MTU: if value MTU (Maximum Transmission Unit) is too high, data packets will be fragmented and the connection will be unstable. The optimal value is 1472 or 1500.
• 🔄 Routing loopIf you have two routers with DHCP enabled on your network, they may conflict. Disable DHCP on the second router.
• 📡 Incompatibility of Wi-Fi standards: older devices (eg iPhone 5 or Samsung Galaxy S3) do not support Wi-Fi 6 (802.11ax). Enable compatibility mode in your router settings.

🛠 How to change the MTU on a router:

1. Go to your router settings.
2. Find the section WAN or Internet.
3. View the parameter MTUIf it is bigger 1500, reduce to 1472.
4. Save the settings and reboot the router.

💡

ping -f -l 1472 ya.ru

⚠️ Attention: If you use a mesh system (for example, Google Nest Wi-Fi or TP-Link Deco)The problem may be due to incorrect synchronization between nodes. In this case, the only solution is a full system reset and a fresh setup.

FAQ: Frequently Asked Questions about Wi-Fi Problems