Resolve invalid IP configuration over 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 that you have permission 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 an internet connection problem that depends on the configuration of the wifi network you are connected to, an exclamation mark may appear above the wifi icon that warns of an error " WiFi does not have a configuration Valid IP ". Fortunately, this is an easy error to solve if you are a computer administrator and if there are no other problems dependent on the internet network manager that prevents it.

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 surf and access the internet. This may be due to an incorrect IP assignment by the DHCP service. By default, each network connection (also via Ethernet cable) automatically obtains the IP address and other connection parameters such as subnet mask, gateway and DNS servers. However, due to some unknown reasons, the connection does not get one or more of these parameters or receives them incorrectly. As a result, all connections on the computer cannot reach and go through the DHCP server with the consequence such as lack of Internet access or limited connectivity.
Usually this is a problem that occurs in company offices, where the network allows access to only 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 the 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 recovery in Windows 10

First, it is worth trying the automatic network recovery tool that Windows 10 makes available in its settings. Then open Settings from the Start menu, go to Network and Internet, select Status and scroll down the screen on the right until you find the link of Network Recovery . 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 (right click on the Start menu or, if it is not present, search for CMD on the Start menu, right click on it and run it as administrator) and run the following commands, one for one, pressing Enter after each.
netsh winsock reset
netsh int tcp reset
netsh int ip reset
Below, it is 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 Manage known networks link on the right. 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, you should restore the previous version. Conversely, if the driver has not been updated for some time, then it is certainly 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 restore the network on the PC by reinstalling the current driver : then right-click on the Start menu, go to Device Manager, search 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 screen on the right and press the Change adapter settings link. Right click on the Wifi tab, go to Properties, select IPv4, press Properties and check that the option Automatically obtain an IP address is active and also Obtain DNS server address automatically . Click on OK.

If it doesn't work out

If the connection remains limited and the IP configuration is not valid even after all these attempts to resolve, then there is a problem on the router. You can check if other PCs suffer from the same situation, you can try to update the firmware of the router or change the router.
In the configuration of the router or modem, you can check that there is no limit in the number of IPs that it can assign via DHCP, looking for the option.
READ ALSO: Solutions for wifi and router connection problems