A configuration issue has been detected with your browser's DNS resolution.
Several sites do not open after changing DNS settings.
Check whether you changed DNS or VPN settings just before the problem started.
If it is checked and resolved from above, you do not need to proceed to the next step.
Several sites do not open after changing DNS settings.
Difficulty Easy · Estimated time 5 minutes
Check points: Record the error code, when it occurred, and any recent changes.
A configuration issue has been detected with your browser's DNS resolution.
Difficulty Moderate · Estimated time 10~30 minutes
Check points: Check if name resolution for multiple domains works again.
When troubleshooting a computer that suddenly fails to connect to the Internet, it is important to rule out the causes one at a time. Based on the “No Internet” symptom, check the router/modem or ISP problem and the network adapter/IP/DNS settings, then proceed to the next step. Compare with other devices and wired connections to narrow down where the problem occurs: PC, router, or ISP.
Among Internet problems, the “Wi-Fi connected but no Internet” symptom may be related to the router’s Internet line or DHCP/DNS problems. Check the wireless adapter status, saved profiles, router/signal quality, and driver in order.
Content review date: 2026-10-07