You are connected to your TP-Link router WiFi, the signal is strong, but some of your devices just refuse to load any web page. Your phone works fine but the laptop says no internet. Or the smart TV streams without a problem while your tablet cannot even open Google. This is a frustrating but surprisingly common issue and it almost always has a fixable cause.
Before touching the router, restart the device that is not getting internet. Turn off WiFi on the device, wait ten seconds, and turn it back on. If that does not work, fully restart the device. A simple reboot clears out stale network configurations and forces the device to request a fresh IP address from the router.
On the affected device go to WiFi settings, tap your TP-Link network name, and select Forget This Network. Then reconnect by entering the WiFi password again. When a device forgets and rejoins the network, it gets a completely new IP lease and clears any cached settings that might have been causing the conflict.
TP-Link routers have a MAC filtering feature that can whitelist or blacklist specific devices. Log into your router admin panel at 192.168.0.1 or tplinkwifi.net. Go to Advanced then Security then Access Control. If access control is turned on, check if the device that has no internet is on the blocked list. Either remove it from the blacklist or add its MAC address to the whitelist.
Sometimes the router hands out its own IP as the DNS server but certain devices have trouble resolving domain names through it. On the device that has no internet, go to WiFi settings, tap your network, and switch DNS from Automatic to Manual. Enter 8.8.8.8 as the primary DNS and 8.8.4.4 as the secondary. These are Google public DNS servers and they bypass any DNS issues your router might be having with specific devices.
Two devices with the same IP address on your network will cause one or both to lose internet. Log into your TP-Link admin panel, go to Advanced then Network then DHCP Server, and check the DHCP Client List. Look for duplicate IP addresses. If you find a conflict, restart both devices so they can get new unique addresses. You can also reserve a specific IP for troublesome devices using the Address Reservation feature to prevent future conflicts.
If only one specific laptop or computer has the issue, outdated network drivers could be the cause. On Windows open Device Manager, expand Network Adapters, right-click your WiFi adapter, and select Update Driver. On phones and tablets check for system updates in Settings since WiFi fixes are often included in software updates.
Many TP-Link dual-band routers have a Smart Connect or Band Steering feature that automatically pushes devices between 2.4GHz and 5GHz bands. Some older devices do not handle this switching well and end up connected but without internet. Log into your router, go to Wireless settings, and turn off Smart Connect. Create separate network names for your 2.4GHz and 5GHz bands. Connect the problem device to the 2.4GHz network specifically and test if internet works.
If nothing else has worked, reset the network settings on the affected device. On iPhone go to Settings then General then Transfer or Reset then Reset Network Settings. On Android go to Settings then System then Reset Options then Reset WiFi Mobile and Bluetooth. On Windows open Command Prompt as Administrator and run these commands one at a time: netsh winsock reset, netsh int ip reset, ipconfig /flushdns, then restart the computer.
If multiple devices are affected and none of the above steps help, the router configuration itself might be corrupted. Press and hold the Reset button on the back of your TP-Link router for about 10 seconds until all LEDs blink. After the router restarts, set it up again from scratch through tplinkwifi.net. Reconfigure your WiFi name, password, and internet settings.
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