Modern operating systems, including Windows 10, are designed with user convenience in mind and often independently decide which network interface to use. Ideally, when you connect an Ethernet cable, the system should automatically detect a more stable connection and switch traffic to it, leaving Wi-Fi As a backup channel. However, in practice, users often encounter a situation where the computer continues to use the wireless network, ignoring the physical connection, resulting in reduced speeds and increased ping in games.
The reason for this behavior lies in the prioritization algorithms of network adapters embedded in TCP/IP stack Operating system. By default, Windows may incorrectly evaluate signal quality or interface metrics, favoring the wireless module, especially if the router's signal is strong and the cable was connected after the system booted. This creates a routing conflict, where some traffic may go over the cable and some over the air, or the system may completely ignore the LAN port.
Solving this problem requires manual intervention in the network settings to force the system to know which interface is priorityIn this article, we'll cover not only standard switching methods but also advanced interface metric modification techniques that ensure your PC uses the fastest and most stable connection possible. We'll also examine potential driver conflicts and power saving settings that can interfere with proper operation of a wired network.
Why does Windows 10 ignore the cable when Wi-Fi is enabled?
The fundamental problem lies in how TCP/IP protocol Handles multiple active default gateways. When two network adaptersβwireless and wiredβare simultaneously active on the system, the operating system assigns a numerical value, called a metric, to each. The adapter with the lowest metric receives the highest priority for data transmission. If the metrics are equal or are calculated incorrectly by the system, a situation arises where Windows 10 continues to use Wi-Fi even if the Ethernet cable is physically connected and working properly.
Another factor is the power saving policy built into the network card drivers. Windows 10 strives to minimize power consumption, and in some scenarios, using a single adapter (Wi-Fi) is considered more optimal than maintaining two active interfaces. Furthermore, some motherboard and laptop manufacturers set BIOS or UEFI settings that can affect the device initialization order, which also impacts the network selection logic during system startup.
β οΈ Note: In some corporate networks, administrators may block the ability to change adapter priorities through Group Policy. If you are working on an office computer and are unable to change the settings, please contact your IT department.
It is also worth considering that network card drivers may not work correctly after a system update. Version conflict Drivers for Wi-Fi and Ethernet modules can sometimes cause the system to become stuck on one of them. In such cases, simply switching the priority in the settings may not help, and a more in-depth diagnosis or reinstallation of the network controller software from the hardware manufacturer will be required.
Basic Method: Disabling the Wi-Fi Adapter
The simplest and most radical way to force a computer to use a cable is to completely disable the wireless module. This method ensures that the system has no choice, and all traffic will go through LAN portThis also frees the radio channel from excess noise, which can have a positive effect on the operation of other wireless devices in the home, such as Bluetooth headsets or wireless mice that operate in the same 2.4 GHz frequency range.
You don't need in-depth knowledge of network settings to perform this step. Simply use the standard network connection management interface in Windows 10. This method is especially useful for desktop PCs that rarely move, or for gaming setups where maximum connection stability and minimal ping are essential. Disabling the extra adapter can also resolve memory leaks that sometimes occur when two network interfaces are running simultaneously.
βοΈ Checking the physical connection
However, this approach has its drawbacks. If you use a laptop and frequently move around your apartment or office, you'll have to manually turn on Wi-Fi every time you unplug the cable. Additionally, some modern Windows features, such as Fast Startup, may not correctly restore the state of disabled devices, and you'll have to reactivate the adapter after each reboot. However, for temporary network priority issues, this is the fastest option.
Setting priority by changing the interface metric
A more professional and flexible solution is to manually change the interface metric. This method allows you to leave both adapters enabled, but clearly indicate to the system that the connection is wired. preferable Wireless. Windows will use the cable for primary traffic, leaving Wi-Fi as a backup channel in case the wired connection fails. This is the ideal setup for users who value reliability and uninterrupted operation.
To change the metric, you need to go to the adapter settings. In the properties window, find the protocol. Internet Protocol version 4 (TCP/IPv4) and go to its advanced settings. There, on the "Advanced" tab, uncheck "Automatic metrics" and enter a numeric value in the "Interface metric" field. The lower the number, the higher the priority. It is recommended to set the value 10 for Ethernet and 20 or higher for Wi-Fi.
| Parameter | Meaning for Ethernet (Cable) | Importance for Wi-Fi | Description of influence |
|---|---|---|---|
| Interface metrics | 10 | 50 | A low number gives high priority. |
| Default Gateway | Automatically | Automatically | Determined by the router |
| DNS server | Preferred | Alternative | Affects domain response speed |
| State | Included | Included | Both adapters are active |
After making changes, click "OK" in all open windows to apply the settings. The system may disconnect for a few seconds to rebuild the routing table. You can check the result using the command line by entering the command route printIn the list of active routes, you will see that the interface with the lower metric number (your cable) is higher in the priority list than the wireless adapter.
β οΈ Note: Network settings interfaces may vary depending on your Windows 10 build version and installed updates. If you can't find it, try searching in system settings.
Using the command line to manage routes
For experienced users who prefer command line or PowerShell, there is the ability to manage priorities through the utility netsh or a team routeThis method allows you to quickly flush the DNS cache or force an IP address update, which is often helpful if changing the metrics through the GUI doesn't produce an immediate result. Using the console also allows you to automate the configuration process through scripts.
One useful command is resetting the TCP/IP stack, which can eliminate software errors that prevent proper switching between networks. Executing the command netsh int ip reset Resets protocol settings to factory defaults, removing potentially corrupted registry entries. After this, the system will require a reboot, and the next time Windows starts, it will re-evaluate the available network interfaces.
ipconfig /releaseipconfig /renew
ipconfig /flushdns
The above set of commands, entered sequentially in the command prompt with administrator privileges, releases the current IP address, requests a new one from the router, and flushes the DNS cache. This is the "gold standard" for diagnosing network problems. If, after performing these steps, the system still doesn't switch to the cable, the problem most likely lies deeperβin the drivers or physical damage to the port.
What does the route change command do?
The route change command allows you to change the label of an existing route without deleting it. This is useful if you want to dynamically change gateway priorities without reconnecting the network, but requires precise knowledge of the gateway IP addresses.
Diagnostics and testing of an active connection
After making all the settings, it's crucial to verify that the system is actually using a wired connection. A visual monitor icon in the tray may not be enough, as Windows sometimes displays both icons simultaneously. For a more accurate check, you can use the Task Manager or specialized traffic monitoring utilities, which will show which interface is using the connection. packet data transmission.
Open Task Manager (Ctrl+Shift+Esc) and go to the "Performance" tab. Here you'll see activity graphs for each network adapter. Start a file download or play a high-definition video stream. If the activity graph only increases on the graph Ethernet, and Wi-Fi remains flat, meaning prioritization was successful. If activity is observed on both graphs, it's possible that some applications are using specific routes or DNS.
It's also worth checking the IP addresses. In the command line, enter ipconfigMake sure the Ethernet adapter has the correct IP address (usually starting with 192.168.xx or 10.xxx) and that it's different from the Wi-Fi adapter's address if they're on different subnets. Ideally, both adapters should receive addresses from the same router, but the default gateway priority should be assigned to the wired interface.
Troubleshooting driver issues and conflicts
Even after properly setting up the metrics, users may encounter Windows 10 periodically "switching" back to Wi-Fi. The power saving feature is often the culprit. In Device Manager, under the network adapter properties, on the "Power Management" tab, uncheck "Allow the computer to turn off this device to save power." This will prevent the system from accidentally disabling the card.
Another common issue is an outdated or, conversely, a too-new but buggy driver. Motherboard (ASUS, MSI, Gigabyte) and laptop (Lenovo, HP, Dell) manufacturers regularly release updates for Realtek, Intel, or Killer network controllers. Installing the latest stable driver from the manufacturer's official website often resolves prioritization issues, as it corrects the operating algorithms. network card with the operating system.
In rare cases, conflicts can be caused by antivirus software or third-party firewalls that implement their own network filters. If none of the above helps, try temporarily disabling the third-party antivirus. It's also worth checking if you have any virtual network adapters installed (from VirtualBox, VMware, or Hamachi), which could be hijacking the connection's priority. Their metrics should also be increased (or their priority lowered) to prevent them from interfering with the primary connection.
β οΈ Note: Network interface specifications and settings may vary depending on your router model and network card. Always consult the equipment manufacturer's documentation if standard methods don't work.
Frequently Asked Questions (FAQ)
Does using Wi-Fi and a cable at the same time affect internet speed?
Having two active connections doesn't increase internet speed by itself, as your ISP limits the bandwidth. However, Windows can distribute the load, which in rare cases can cause micro-lags. It's best to use one priority channel (cable) and keep the other as a backup.
Do I need to remove the Wi-Fi antenna if I'm using a cable?
No, you don't need to physically disconnect the antenna. Simply disable the adapter or adjust its priorities in software. However, if you notice interference with Bluetooth (since they operate in the same 2.4 GHz band), disabling the Wi-Fi module can improve the stability of your wireless peripherals.
Why does Wi-Fi turn on again after waking up from sleep mode?
This is a driver behavior or a Windows power saving setting. To fix this, in the Wi-Fi adapter properties in Device Manager, uncheck "Allow this device to wake the computer" and disable the option to turn off to save power.
Can a virus redirect traffic over Wi-Fi?
Malware can theoretically modify the routing table. If you notice strange network behavior, scan your system with an antivirus and reset the network settings using the command netsh int ip reset.
Does this method work on Windows 11?
Yes, the operating principle of the TCP/IP stack and interface metrics management in Windows 11 remains virtually identical to Windows 10, so these instructions are fully applicable to the new version of the OS.