Correction d'Ethernet n'a pas de configuration IP

Je vais vous apprendre comment résoudre le problème selon lequel Ethernet n'a pas de configuration IP valide dans Windows ?

Comment résoudre le problème selon lequel Ethernet n'a pas de configuration IP valide dans Windows ?

Lorsque ce message d'erreur « Ethernet n'a pas de configuration IP valide » apparaît, les utilisateurs remarquent généralement que leur appareil ne parvient pas à se connecter à Internet. Le triangle jaune avec un point d'exclamation apparaît à côté de l'icône réseau. Ce message d'erreur indique que Windows n'est pas en mesure de fournir une adresse IP valide à votre appareil, ce qui est une condition essentielle pour se connecter au réseau.
Une configuration réseau défectueuse, telle que des adresses IP attribuées de manière incorrecte, est la cause la plus courante du problème. En outre, cela peut également être dû à des pilotes réseau obsolètes ou corrompus.
D'autres raisons possibles peuvent être des problèmes avec le routeur ou le modem, des erreurs sur le serveur DHCP ou des câbles Ethernet défectueux.
Nous allons maintenant passer aux méthodes de dépannage détaillées.

1. Changez le DNS pour Google ou Cloudflare.

Pour éviter d'utiliser le DNS par défaut de votre fournisseur d'accès Internet, qui peut être lent ou mal configuré et entraîner des problèmes de connexion, il peut être utile de passer au DNS de Google ou de Cloudflare. Votre ordinateur peut trouver plus rapidement les adresses de sites en ligne avec un DNS plus fiable et plus rapide, ce qui minimise le risque d'erreurs réseau telles que des paramètres IP non valides.

Appuyez sur la touche Windows plus l'icône (I) pour ouvrir les paramètres Windows. Choisissez « Réseau et Internet » dans le menu Paramètres.
Pour modifier les paramètres de l'adaptateur, faites défiler jusqu'à Paramètres réseau avancés et cliquez dessus. Modifier les paramètres de l'adaptateur Avant d'aller plus loin, cela affichera le journal de chaque adaptateur réseau sur votre ordinateur.
Cliquez avec le bouton droit sur votre carte réseau active et choisissez Propriétés.
Accédez à l’onglet « Réseau » depuis le menu « Propriétés ».
Cliquez sur Propriétés, puis choisissez Protocole Internet version 4 (TCP/IPv4). Modifier les paramètres du protocole Internet Sélectionnez Pour accéder aux paramètres DNS de Google ou Cloudflare, utilisez les URL de serveur suivantes. Paramètres DNS de Google Propriétés de la carte réseau… Vous avez cliqué sur Se connecter pour vous connecter aux nuls.
Press Windows + R to open the dialog box. To open Command Prompt, press Ctrl+Shift+Enter and type command. Go to CMD Setup. Click “Yes” to request administrator access at the UAC prompt.
In Command Prompt, use the following command to flush cached DNS data: ipconfig /flushdns. To check if the issue is resolved, run the diagnostics again.

3. Reset Network Settings.

Resetting network settings will allow you to start over if network troubleshooting doesn’t work. This process removes any incorrect settings that may be preventing a valid IP configuration. Remove any custom changes that may be causing the issue, reset all settings to their original state, and reinstall network adapters.

To open the Run dialog box, press Windows+R. To open an elevated command logo window, type cmd in the dialog box, and then press Ctrl+Shift+Enter.
Embed CMD as administrator Click "Yes" to authorize permissions when prompted by User Account Control.
Run these commands to restore network components in Command Prompt with elevated privileges: Enter the following commands: ipconfig /flushdns, ipconfig /renew, nbtstat -R, nbtstat -RR "netsh winsock reset" followed by "netsh int ip reset" c:\esetlog.txt" To finish the reset process, restart your computer.
After restarting, press Windows + R, type control panel and press Enter.
Toggle the adapter settings to the left by going to the Network and Sharing Center.
To disable your Ethernet adapter, press and hold the right button on it.
How to enable the Ethernet adapter again Take a little time, then right-click the adapter and select Enable.

4. Sometimes, checking all the connected cables

will make sure that your Ethernet connection is secure and working. Data may not be transmitted properly if the Ethernet cable is loose or damaged. In order for your computer to establish a stable connection and get a valid IP address, it is important that all the cables are securely connected and undamaged.

5. In case your ISP or router is using IPv4 as the primary one, then IPv6

may cause problems, disable it. Muting IPv6 forces your system to use IPv4 only, which may lead to better connectivity and probably solve the problem for you.

To disable IPv6, open the Run dialog box by pressing Windows + R. Then type ncpa.cpl and press Enter to open the Network Connections menu.
Alternatively, to open the Network Connections menu, right-click on your network adapter and choose Properties.
Note: If prompted by User Account Control (UAC), click Yes. Properties for an active network.

In the Properties window, under the Networking section, highlight the check box next to Internet Protocol Version 6 (TCP/IPv6).
Restart your computer and, if that is the case, disable it and press OK to save the changes.

6. The problem with the network might be solved by disabling the Microsoft Adapter network debugging kernel.

That will eliminate possible conflicts with the main network driver. Regular Internet use does not imply the use of this virtual adapter, although it is useful for developers to clean up the system. Turning it off helps prevent it from interfering with the main Ethernet connection, so that the system can focus on the necessary network without getting confused.

To open the Run dialog box
Press Windows + R. To open the Device Manager with administrative privileges, type devmgmt.msc and press Ctrl + Shift + Enter. As User Account
Control is prompted, open the Device Manager and press Yes.
In the Device Manager, go to the View menu and choose Show hidden devices.
To display hidden devices in Device Manager, right-click on the Microsoft Network Cleanup Adapter and select Disable.
Next, to disable the Core Cleanup Adapter, confirm if prompted and then restart your computer to see if the problem is resolved.

7. In certain cases, changing the MAC address can fix network issues.

Set a MAC address for your network card. Each network card has its own unique MAC address, but sometimes your router or Internet provider may not recognize it correctly, leading to connection issues. If you're having trouble getting a valid IP configuration, try setting a new MAC address manually; this will refresh your device's network connection.

To open the Run dialog box, press Windows + R. To open an elevated command prompt, type cmd and press Ctrl + Shift + Enter.
When prompted for User Account Control, open an elevated Command Prompt and click Yes.
Make a note of the physical address of your active Ethernet adapter and type ipconfig /all in the Command Prompt.
Open the Network and Sharing Center in your control panel and select Change adapter settings to find the physical address.
Select Properties by right-clicking on your network connection. To access the Ethernet properties, click Configure next to the name of Your network adapter in the Networking pane.
Find "Network Address" in the list, click it, and then enter the address noted earlier.
To save your changes, click OK. Then, restart your computer and router to see if the problem persists. The problem is now fixed.

8. If you have DHCP enabled

your device will automatically get a valid IP address from the router. Without DHCP, you will need to manually enter the network settings, which can lead to various errors. Enabling the use of DHCP minimizes such errors and ensures smoother communication across the network without potential problems resulting from invalid IP configurations.

To access the Run dialog box
Press Windows + R. To open the Services window with administrative privileges
Type services.msc and press Ctrl + Shift + Enter.
To allow administrator access, access the services panel and click “Yes” on the User Account Control prompt.
Find the “DHCP Client” service by going down the page; to open its properties, double-click it.
DHCP Client Properties – If the service is not running, click Start and set the Startup Type to Automatic.

9. When your device tries to save power by putting device components

Such as the network adapter into low power mode, it may cause connections to fail.

In the system tray, right-click on the network icon and select "Open Network & Internet Settings." Open Network & Internet Settings, go to the Sharing Center, and select "Change Adapter Settings."

Long-press the network icon and select "Disable" to temporarily disable your connection.
To access the properties of the active network connection, turn on your device and go to the Network menu.
Then, click Configure for your network adapter.
In the new window, go to the Power Management panel and select Allow the computer to turn off this device to save power.
Disable the device's power-saving feature.

After confirming the changes by clicking "OK", you can enable your network connection again from the Network and Sharing Center.
Check if the network failure still occurs after these changes.

10. Renew your IP settings

Renew the IP. This can resolve certain issues, such as if your computer's IP address is old or conflicting with another device. To accomplish this, you must relinquish the current IP address and obtain a new one from the DHCP server.

To open Run dialog box, press Windows + R. To open an elevated command prompt, type cmd and press Ctrl + Shift + Enter. To open an elevated command prompt For access to the User Account Control system, click the "Yes" button placed on the command prompt.
Press Enter after each command to restore your IP settings: ipconfig /release ipconfig /flushdns ipconfig /renew.
Then, type the following commands in the elevated command prompt.
Back to PC

11. Discontinue third-party antivirus

Third-party antivirus software can modify network settings and other system tasks occasionally. Interferences could block important changes or settings for a stable connection, but temporarily disabling it allows Windows to manage network tasks without stress.

Start menu.
Go to the Settings menu.
Click Update & Security.
In the left pane, click Windows Security.
Click Manage settings under the Virus & threat protection settings section on the right side.
Set the protection switch to disabled after scanning for real-time protection.

12. Perform a CHKDSK scan.

Problems with the file system or bad sectors on the disk can prevent Windows from properly accessing essential network files. To ensure that all files essential to the network are working properly, a CHKDSK scan checks the status of your file system and fixes errors or defective areas.

To become an administrator, find Command Prompt, right-click on it, and then select Run.
Enter the following command in the form of pressure: chkdsk /f /r.
To fix any disk errors, restart your computer so that CHKDSK can analyze them.

13. Put the network driver into compatibility mode.

You will start to avoid conflicts with new system updates by having the network card installer run in compatibility mode, so that Windows can install it as if it were on an older operating system. Thus, you will increase the reliability and stability of the driver, and fix IP configuration problems due to previous Windows incompatibility. How? Drag the most recent driver for your Network onto your screen below.

Select Properties on the driver installation file, then go to Compatibility and choose an older version of Windows.
Click the top button for some information. Run in compatible mode.
Perform the installation as administrator and follow the on-screen instructions.

14. Modifying the power plan for maximum performance

To ensure that all network hardware such as the Ethernet adapter operates at its maximum capacity, adjust your computer's power settings to the maximum performance power plan. Thus, avoid problems such as disconnections or errors in IP configuration and slowdown of your network adapter.

To open the Run dialog box, press Windows + R. To access the classic Control Panel interface, type Control Panel and press Enter.
In the Control Panel, view up to the Power Options.
You can click on Change plan settings. Go to Plan settings swap.
Select Advanced power settings. Click on “Edit plan settings” and then “Change advanced power settings.”
Find the wireless adapter setting under advanced power options and set it to Maximum performance.
To test if the issue has been resolved, restart your computer after applying the changes.

15. Virtual Ethernet devices should be turned off.

Sometimes, virtual Ethernet adapters from programs like VPNs or virtual machines can interfere with your primary network connection. Physical Ethernet connections cannot receive the correct IP address from Windows, but adjusting these virtual devices can resolve these issues.

To open the Network Connections window, use Windows + R, type ncpa.cpl, and then press Enter.
To disable these connections, right-click on any virtual adapter you see and choose Disable.
Restart the system after disabling all virtual adapters to check if the Ethernet error is resolved.

16. Improve power consumption on your network.

In anticipation of instability and connectivity issues, it may be important to adjust the power management settings for your network adapter. By optimizing these settings for power efficiency, you could potentially reduce excessive power demands that could cause your network adapter to malfunction or accidentally disconnect.

Hold down the Windows key plus R, type devmgmt.msc, then press Enter to open Device Manager. Go to Device Manager.
To view the properties of your network adapter, expand the section labeled "Network Adapters," and then right-click your adapter.
If it is set to 100%, go to the Advanced tab, find the Power Output property, and adjust its value.
Find and apply the changes, then restart your computer.

17. The BIOS is the only means of authorizing the Ethernet adapter.

You may need to enable the network adapter in the BIOS to ensure that your Ethernet adapter works properly. This way, the motherboard can detect the network adapter and use it to obtain the IP address of your router.

Power off and power on your computer, entering the BIOS settings screen using the designated key - usually F2, F10, F12, DEL or ESC - while the boot process is in progress.
You will arrive at the BIOS settings -Onboard peripherals or onboard devices menu page.
Pay attention to the ON for Integrated LAN, Ethernet, etc. settings. Be careful about the changes and savings regarding the BIOS.
Start Windows and inspect the problem further after changing the settings in the BIOS.

18. Uninstall the latest Windows update.

Sometimes, uninstalling the latest Windows update fixes the "Ethernet does not have a valid IP" problem. IP address errors can occur when updates maliciously interact with your computer's drivers or settings.

Once you've typed appwiz.cpl, press Enter and then press Windows + R.
Click "View installed updates" on the left side of the screen to select the recent one you want to remove.
Right-click on the selected update and click "Uninstall."
Follow the instructions that appear to uninstall the update and restart your computer.

19. Help quality of service by configuring your router.

After enabling quality of service on your router, you might be in a better position to manage the flow of traffic on your network. The flow of information becomes easier, and by releasing the congestion on the network, you will have the ability to troubleshoot issues in the configuration in the IP.

Enter your router's IP address in a web browser; it's usually 192.168.0.1 or 192.168.1.1.
Log in with your router's administrative details. The default username is usually admin, and the password is admin or password, unless you've changed it yourself.
It's typically under the advanced section or similar location.
Turn on Quality of Service and set it to your needs, or use the default settings if you're not sure.
If necessary, reboot your router and save changes.
See if the Ethernet connection error is resolved after enabling QoS.

20. You have access to the auto-configuration service.

Check if the auto-configuration service is enabled so that your device can automatically configure the network settings. This service helps Windows connect to the networks by using the appropriate settings therein. There are possibilities of your computer havingconnection issues due to the service being turned off, because it will not be able to obtain an IP address from the network.

Pour ouvrir l'invite de commande, appuyez sur Windows + R, tapez cmd , puis utilisez Ctrl + Maj + Entrée. Déverrouiller une invite de commande avec privilèges élevés
Pour activer le service de configuration automatique Ethernet, saisissez la commande suivante dans l'interpréteur de commandes et appuyez sur Entrée: netsh lan set autoconfig enabled=yes interface=Ethernet.
Redémarrez votre ordinateur après avoir exécuté la commande et vérifiez si le problème Ethernet est résolu.

21. À l’aide de Net Config, réinstallez les dépendances réseau.

Si aucun de ces éléments ne fonctionne, la réinstallation des composants réseau peut résoudre le problème. Les paramètres TCP/IP et DNS peuvent être configurés de manière incorrecte ou erronée, et leur restauration peut restaurer des aspects clés tels que la résolution d'adresse IP. En les mettant à jour, vous pouvez éliminer les conflits ou les paramètres obsolètes et permettre à votre appareil de récupérer et de se connecter correctement au réseau.

Initialisez l'invite de commande avec Windows + R, tapez cmd et Ctrl + Shift + Entrée.
Entrez la commande suivante dans l'invite de commande et appuyez sur Entrée-netcfg -d .
Une fois exécuté, redémarrez votre ordinateur pour que les modifications prennent effet.
Si vous redémarrez Windows, il essaiera de réinstaller tous vos périphériques réseau et de les configurer avec leur configuration par défaut.

Comment résoudre le problème Ethernet n'a pas de configuration IP valide sur Windows?