When your computer suddenly stops broadcasting Wi-Fi, it can catch you off guard at the most inopportune moment. You might be working, watching movies, or gaming, but suddenly your wireless devices—phones, tablets, or smart speakers—lose connection to the access point. Often, the problem isn't a major hardware failure, but a simple software conflict or Windows service glitch, which can be easily fixed without calling a technician.
Before you panic and reinstall your operating system, it's worth analyzing the latest changes. It's possible there's been an update. network card drivers, firewall settings have changed, or your ISP's traffic limit has simply been reached. In most cases, a few sequential diagnostic steps are enough to restore the network to working order. We'll cover all the main scenarios, from simple reboots to in-depth protocol configuration.
It's important to understand that a laptop and desktop PC may have different hardware limitations for creating a hotspot. If you're using an external USB adapter, the problem may be overheating or incompatibility with the current OS version. Below, we'll detail a step-by-step guide to identifying and troubleshooting the issue, restoring stable internet access to all your devices.
Initial diagnostics and service restart
The first thing you need to do if your computer stops working correctly with the network is to check the status of the operating system's network services. It often happens that the service WLAN AutoConfig (or "WLAN AutoConfig Service") simply stops due to an internal failure or a conflict with the antivirus. To check, click Win + R, enter services.msc and find the specified service in the list.
Make sure the startup type is set to "Automatic" and the service is running. If it's stopped, click "Start." In some cases, a full service restart can help: first "Stop," wait a few seconds, and then "Start" again. This action forces a refresh of all network configurations and clears any temporary errors.
It's also worth paying attention to the physical WiFi indicator on your laptop or adapter. If a red cross or "no connection" icon is lit, the adapter may be disabled by software. In Windows 10 and 11, this can often be resolved by toggling the slider in the Action Center. However, if the slider is grayed out, this is a clear sign of a driver issue or a physical disconnection of the device in Device Manager.
It might be a good idea to reset your network settings via the command line. Open Terminal as administrator and enter the command netsh winsock resetAfter completing this step, a computer reboot is required. This method is effective when the system "forgets" the correct protocols for interacting with network equipment.
⚠️ Warning: Resetting the TCP/IP stack via the command line may cause static IP addresses to be lost if they were manually assigned to printers or the office's local network. Save this information in advance or configure it to be obtained automatically via DHCP.
☑️ Primary network diagnostics
Checking adapter drivers and settings
If restarting the services doesn't help, and the computer still isn't sharing the internet, the problem may be with the drivers. A driver is the intermediary between the operating system and the hardware. If it's corrupted, outdated, or, conversely, updated to a buggy version, the adapter will stop functioning as an access point. Go to device Manager (by right-clicking on the Start menu) and find the "Network adapters" section.
Look for yellow exclamation marks. If your WiFi module (often labeled "Wireless," "802.11," or "Wi-Fi") has one, it's not working properly. Try selecting "Uninstall device," then click "Action" -> "Scan for hardware changes" in the top menu. The system will attempt to reinstall the driver again.
Pay special attention to power saving settings. Windows often disables network cards to save power, which can lead to unstable access point operation. In the adapter properties (Power Management tab), uncheck "Allow the computer to turn off this device to save power."
For advanced users, it might be helpful to check the adapter's operating mode. In the driver properties, on the "Advanced" tab, find the parameter Wireless Mode or "802.11 Mode." Make sure you select the mode supported by your devices (usually 802.11n or 802.11ac). Sometimes, forcing the device to switch to "N-Only" or "AC-Only" mode resolves compatibility issues with older devices.
Where can I download the correct drivers?
Never use automatic driver installation programs (like DriverPack) for network cards unless absolutely necessary. The best source is the official website of your laptop or motherboard manufacturer. Look for the "Support" section, enter your model, and download the driver specifically for your version of Windows. Drivers from the chipset manufacturer's website (Intel, Realtek, Qualcomm Atheros) are also suitable, but the version from the laptop vendor is often more stable.
Setting up a mobile hotspot in Windows
Modern versions of Windows (10 and 11) have a built-in "Mobile Hotspot" feature that allows you to share internet access via a cable or other adapter. If this mechanism stops working, you should check your sharing settings. Go to Settings -> Network & Internet -> Mobile Hotspot.
It's important to check which connection is broadcasting the internet. If you have an Ethernet cable connected and WiFi, the system should know which one to broadcast. Also, check the frequency range: some older devices don't see the network if it's broadcasting in the 5 GHz band. Try switching the "Band" setting to 2.4 GHz.
If the hotspot slider doesn't activate or returns the error "Unable to set up mobile hotspot," the issue may be with the Microsoft Virtual Adapter. In Device Manager, under the "View" menu, enable "Show hidden devices." Find Microsoft Wi-Fi Direct Virtual AdapterIf there is an error on it, delete it and restart your PC.
An alternative way to configure this is through the control panel. Click Win + R, enter ncpa.cplFind the adapter that connects to your internet (e.g., Ethernet), right-click -> Properties -> the "Sharing" tab. Make sure "Allow other network users to connect to this network..." is checked, and your wireless connection is selected in the drop-down list.
IP and DNS conflicts
A common reason why a computer stops broadcasting Wi-Fi is an IP address conflict. When you create an access point, the computer assigns itself a static address (usually 192.168.137.1) and acts as a DHCP server for connecting devices. If another device with the same address or range already exists on your local network, a conflict will occur, and broadcasting will stop.
You can check this by opening the command prompt and entering ipconfigFind the adapter that matches your access point (often labeled "Wireless Network" with a number). Make sure the IPv4 address matches the expected gateway. If the addresses are mixed up, try resetting the TCP/IP settings with the command netsh int ip reset.
DNS issues can also cause problems. If the computer distributing the internet itself has problems resolving domain names, connected clients may complain about "No internet access," even though the network is active. In the IPv4 protocol properties, try manually entering DNS servers, for example, from Google (8.8.8.8) or Cloudflare (1.1.1.1).
In corporate networks or complex home setups with multiple routers, it's important to monitor the address range. If your main router assigns 192.168.1.x addresses, the access point you create on your PC should use a different subnet address, such as 192.168.137.x, to avoid any overlaps.
The impact of antiviruses and firewalls
Third-party antivirus suites (Kaspersky, ESET, Avast, and others) have their own firewall modules that can block the creation of an access point. They view a computer's attempt to act as a gateway for other devices as a potential security threat. If you recently updated your antivirus or installed a new one, the problem is most likely with it.
To diagnose the problem, temporarily disable network protection in your antivirus. If WiFi is working again, you'll need to add your connection to the exceptions or trusted networks in your firewall settings. Don't leave your computer unprotected for long; configure the rules immediately after testing.
The built-in Windows firewall may also be blocking the connection. Check that the network profile is not set to "Public." For a hotspot, it is advisable (though not always secure without proper configuration) to use the "Private" profile, which allows device discovery. Go to Control Panel -> Windows Defender Firewall and check the status.
Sometimes creating a new rule for incoming connections can help. In the advanced firewall settings, you can create a rule allowing all connections for the Internet Connection Sharing (ICS) service. This is useful for experienced users who understand the risks of opening ports.
⚠️ Warning: Permanently disabling your antivirus and firewall is strongly discouraged, especially if you're sharing WiFi in a public place or office. This leaves your computer vulnerable to attacks from outside the network.
Table of common errors and solutions
To quickly navigate potential issues, we've created a summary table. It will help you match symptoms with probable causes and solutions.
| Symptom | Probable cause | Solution method |
|---|---|---|
| There is a hotspot, but "No Internet access" | DNS or gateway error | Set DNS to 8.8.8.8, check your provider's cable |
| Devices don't see the WiFi network | Incorrect range (5 GHz vs 2.4 GHz) | Change the frequency in the hotspot settings to 2.4 GHz |
| Error: "Unable to set up mobile hotspot" | Virtual adapter failure | Uninstall Microsoft Wi-Fi Direct Virtual Adapter from the Device Manager |
| There is Internet only on the PC, no sharing | Disabling public access | Enable the "Allow others..." checkbox in the adapter properties. |
| The network disappears after a few minutes | Adapter power saving | Disable power saving in device properties |
Frequently Asked Questions (FAQ)
Why does my computer distribute WiFi, but the speed is very low?
Low speeds can be caused by channel congestion (neighbors using the same channel), a weak internet signal, or bandwidth limitations in the WiFi adapter itself (for example, the older 802.11g standard). Speeds can also be reduced if an antivirus scans all traffic in real time.
Can I share WiFi if I have a limited data plan?
Technically, a computer can share the internet with any plan. However, some providers prohibit sharing (using P2P and creating hotspots) at the contract level or detect it by TTL. In this case, the connection may be blocked or additional fees may apply. Check the terms of your plan.
How do I share WiFi via the command line if the menu doesn't work?
Use the command netsh wlan set hostednetwork mode=allow ssid=Name key=Password to create a network and netsh wlan start hostednetwork to launch. This is an old method that works even when the Windows graphical interface crashes.
Does the Windows version affect the ability to seed?
Yes. The Mobile Hotspot feature is fully functional in Windows 10 and 11. In Windows 7 and 8, this required third-party programs (Connectify, MyPublicWiFi) or complex command-line manipulation, as the built-in functionality was limited.