Wi-Fi connects your computer to a local network; it does not prove that the network has internet access. Test another device on the same Wi-Fi and two unrelated websites. If every device fails, check the router and provider. If only one computer fails, concentrate on that computer.
Do not disable your firewall or security software to make an unknown network work. Avoid router factory reset and Windows network reset until you understand what settings and software must be restored.
1. Check the scope before changing settings
A browser error on one page does not always mean your internet is down. The website itself, its sign-in service, or a browser extension may be at fault. Try another familiar website and, if available, a second browser. Record the exact error wording.
On a phone, briefly turn mobile data off before testing the same Wi-Fi. If the phone works while the PC fails, the shared internet connection probably works at that moment. If both fail, start with the network rather than reinstalling browser software.
- Confirm you joined your intended network, not a printer’s Wi-Fi Direct network or an old extender without an internet connection.
- Check whether an Ethernet cable at the router has come loose, without unplugging cables whose function you do not know.
2. Look for a required sign-in
Hotels, libraries, airports, and some guest networks require acceptance on a sign-in page. Use the network sign-in notification supplied by the operating system, or ask the venue for its official connection instructions. A connected icon alone does not mean you have completed that process.
Never bypass a certificate warning to access email, banking, or a login page. If a network unexpectedly asks you to install a certificate, download a security tool, or pay for a free venue connection, stop and verify with staff through a trusted channel.
3. Check the shared connection
If all devices fail, inspect the modem or router indicators and compare them with the device manual. A red light can mean different things on different models, so do not infer the cause from color alone. Check the provider’s official outage information using another connection if possible.
Restart the equipment using its normal restart procedure when household users can tolerate the interruption. For separate modem and router devices, follow the provider’s recommended order and wait for each device to settle. A recessed Reset control is not the same as a restart.
- After the restart, test one computer before reconnecting every application and download.
- If the provider reports an outage, wait for its resolution rather than repeatedly changing passwords or DNS settings.
4. Investigate one affected Windows 11 PC
Use Start > Settings > Network & internet to check the active connection and run the Network and Internet troubleshooter through Get Help. Restart the PC after saving work. Compare the connection again before making another change.
A newly installed personal VPN, proxy, or filtering application may explain why one PC cannot browse. Review its own status and official help. On a managed device, send the error to IT instead of turning off organizational protections.
- Check that date, time, and time zone are correct if multiple secure websites show certificate or clock errors.
- If only one browser fails, investigate that browser’s extensions and site data using our browser guide.
- If you know the home Wi-Fi password, forget and reconnect to that network as a later step.
What the result means
If the PC works on another trusted network, tell the home provider or router manufacturer what differs. If the PC fails on multiple known-working networks, the device, adapter, or its software needs closer inspection.
Do not buy a faster internet plan to fix a complete loss of access. Useful support information includes when the fault began, affected devices, wired versus Wi-Fi results, router model, and exact errors. That record makes the next support conversation more productive.
Sources and further help
Official documentation used to check the guidance. Menu names and options can vary by device and software version.