Resolve invalid IP configuration on Wi-fi network

To connect to a WiFi network from a Windows 10 PC, simply press the internet connection button on the notification bar near the clock and choose the wifi network you have the authorization to access. The same thing can also be done by pressing the Windows-A keys together or by pressing the message icon at the bottom right to open the control center and then press the button that activates the Wifi.
In some cases, if there is a internet connection problem that depends on the configuration of the wifi network to which you are connected, an exclamation point may appear above the wifi icon that warns of an error "WiFi does not have a valid IP configuration"Fortunately, this is an easy error to fix if you are an administrator of the computer and if there are no other problems dependent on the Internet network operator that prevents.

The Wi-Fi does not have a valid IP configuration

The error message means, in very simple words, that the computer has not received a correct IP address from the router to browse and access the internet. This may be due to awrong IP assignment by the service DHCP. By default, every network connection (even via Ethernet cable) automatically obtains the IP address and other connection parameters such as the subnet mask, gateway and DNS servers. However, due to some unknown reasons, the connection does not get one or more of these parameters or gets them wrong. As a result, all connections on the computer cannot reach and pass through the DHCP server resulting in no Internet access or limited connectivity.
Usually this is a problem that occurs in company offices, where the network allows access only to a certain number of devices and therefore the IP addresses that the router can assign are exhausted. If the error occurs in a network where we are sure that the router does not have this type of limitation or where only a few PCs and smartphones are connected, then it is a problem due to an incorrect configuration of the PC, therefore it can be solved.

Solutions to Invalid IP Configuration Error on Wifi

Below, we see all the ways to resolve the limited connectivity error or invalid IP configuration on the Wifi network. The various methods must be tried starting from the first.

Network Reset in Windows 10

First, it's worth trying it out automatic network reset tool that Windows 10 makes available in its settings. Then open Settings from the Start menu, go to Rete and Internet, select Status and scroll down the right screen until you find the link of Network Restoration. Press it and wait to see if the problem is solved. If not, proceed with manual resolution.

Reset the TCP / IP

To restore the TCP / IP network protocol you need to run some commands in the command prompt. Open the command prompt with administrator rights (press with the right mouse button on the Start menu or, if it is not present, search for CMD on the Start menu, press on it with the right button and run it as administrator) and execute the following commands, one for one, hitting Enter after each.
netsh winsock reset
netsh int tcp reset
netsh int ip reset
Below, it's worth immediately proceeding with the commands that renew the IP address assignment using the following commands on the same prompt:
ipconfig / release
ipconfig / renew
ipconfig / flushdns which clears the DNS cache
Restart your computer and try to connect to the WiFi network.

Cancel network storage and try a new connection

From Windows 10 Settings, go to Wi-Fi, then press the link on the right Manage Known Networks. Here select the network that has connection problems and click the Delete storage button. Then try to connect again.

Check for network driver updates

If you have made a recent update to the network card driver, it is a good idea to revert to the previous version. Conversely, if the driver has not been updated for some time, then it is definitely useful to install a new version.
In this regard, I refer to the guide on how to update the network driver.
In any case, you can reset the network on your PC reinstalling the current driver: then right-click on the Start menu, go to Device Manager, look for the wifi network card (Wireless Network Adapter), right-click on it and uninstall the device. Restart your PC and the drivers will be reinstalled automatically.

Check the network connection

From Settings> Network and internet, press on Wi-fi, scroll down the right screen and press the Change adapter settings link. Right click on the Wifi tab, go to Properties, select IPv4, click on Properties and check that the option is active Ottieni automatically an IP indirizzo and also Ottieni indirizzo DNS server automatically. Click on OK.

If it doesn't work out

If the connection remains limited and the IP configuration is invalid even after all these attempts to resolve, then there is a problem with the router. You can check if other PCs suffer from the same situation, you can try to update the router firmware or change router.
In the configuration of the router or modem, you can check that there is no limit in the number of IPs it can assign via DHCP by looking for the option.

ALSO READ: Solutions for wifi and router connection problems

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