That message means your computer is talking to the router, but the router is no longer talking to the rest of the world. So the problem lies further down the line, or in one specific setting.
That is good news for the diagnosis : half the chain is working. What remains is to find where it breaks, and three quick tests are enough to tell.
Take your phone, turn off its mobile data, and try to open a page over Wi-Fi. If it browses normally, your internet access is fine and the problem is confined to the computer. If no device gets through, the router or the line is at fault.
A red, orange or unlit light on the "Internet" or "Fibre" section means the router has lost its link with the provider's network. In that case no setting on your computer will change anything. See red light on the router.
Check that you are connected to your own network, and not to a neighbour's or to a saved public hotspot. It happens more often than people think, particularly in flats, and it produces exactly this symptom.
In order, from the simplest to the most technical :
If some sites open and others do not, or if apps work while the browser fails, the problem lies with the service that translates site names into addresses. Changing the DNS in the network adapter settings fixes that kind of fault immediately. It is a common setting, carries no risk, and we do it regularly from a distance.
When nothing else works, Windows offers a complete reset of the network configuration, which reinstalls the adapters and clears the settings that have built up. It is at the very bottom of the network settings.
Two precautions : the machine restarts, and every saved Wi-Fi key is erased. Have your router password to hand before starting - see finding your Wi-Fi password.
Restart it by unplugging it completely for a minute, not with a button. Wait until it has fully come back, which takes several minutes on fibre. If the problem persists, contact your provider : a local outage, a fault on the line or work in progress are all common, and their app often reports the incident.
These settings are usually dealt with quickly, provided there is some way onto the network. We come to you across Lyon and the Rhone, or work remotely through a phone's shared connection.
That message means the connection to the local network is established and encrypted, but no route out to the internet is detected. The cause is generally the router or a network setting, not the Wi-Fi adapter.
No, and it is the typical symptom of a DNS problem or of filtering by an antivirus. Changing the DNS settles most of these cases.
A simple restart, yes. A factory reset, no : it wipes your configuration, network name and key included, and makes things needlessly complicated.
Network diagnosis at your home, across Lyon and the Rhone.
Automatic assistant: it can make mistakes. Never share a password or a card number.
