Sửa lỗi you are currently not connected to any networks năm 2024
If you can’t get email, browse the web, or stream music, chances are you’re not connected to your network and can’t get onto the internet. To fix the problem, here are some things you can try. Things to try firstTry these things first to help you fix or narrow down the connection problem.
Note: If you have a cable modem/Wi-Fi router combo device, you only need to follow the steps for the single device.
Connection problems can be due to a variety of reasons—problems with the website, your device, the Wi-Fi router, modem, or your Internet Service Provider (ISP). Try the following steps to help narrow down the source of the problem.
If you see results like this and are getting a reply, then you have a connection to your Wi-Fi router, so there might be a problem with your modem or ISP. Contact your ISP or check online on another device (if you can) to see if there's a service outage. If the results of the ping test indicate that you are not getting a reply from the router, try connecting your PC directly to your modem by using an Ethernet cable (if you can). If you can connect to the internet using an Ethernet cable, it confirms the connection problem is due to the Wi-Fi router. Make sure you've installed the latest firmware and see the documentation for your router. Run network commands Try running these network commands to manually reset the TCP/IP stack, release and renew the IP address, and flush and reset the DNS client resolver cache:
Uninstall the network adapter driver and restart If the previous steps didn’t work, try to uninstall the network adapter driver, and then restart your computer. Windows will automatically install the latest driver. Consider this approach if your network connection stopped working properly after a recent update. Before uninstalling, make sure you have drivers available as a backup. Visit the PC manufacturer’s website and download the latest network adapter driver from there. If your PC can't connect to the internet, you'll need to download a driver on a different PC and save it to a USB flash drive so you can install the driver on your PC. You’ll need to know the PC manufacturer and model name or number.
After your PC restarts, Windows will automatically look for and install the network adapter driver. Check to see if that fixes your connection problem. If Windows doesn't automatically install a driver, try to install the backup driver you saved before uninstalling. Check if your network adapter is compatible with the latest Windows Update If you lost your network connection immediately after upgrading to or updating Windows 11, it's possible that the current driver for your network adapter was designed for a previous version of Windows. To check, try temporarily uninstalling the recent Windows Update:
If uninstalling the most recent update restores your network connection, check to see if an updated driver is available:
If Windows can’t find a new driver for your network adapter, visit the PC manufacturer’s website and download the latest network adapter driver from there. You’ll need to know the PC manufacturer and model name or number. Do one of the following:
Use network reset Using network reset should be the last step you try. Consider using it if the steps above don’t help to get you connected. This can help solve connection problems you might have after upgrading from Windows 10 to Windows 11. It can also help to fix the problem where you can connect to the internet, but can't connect to shared network drives. Network reset removes any network adapters you have installed and the settings for them. After your PC restarts, any network adapters are reinstalled, and the settings for them are set to the defaults.
Wait for your PC to restart, and see if that fixes the problem. Notes:
Check your Wi-Fi settings Wi-Fi adapter manufacturers might have different advanced settings you can change based on your network environment or connection preferences. Check the Wireless Mode setting for your network adapter and make sure it matches the capabilities of the network you’re trying to connect to. If it doesn’t match, you won’t be able to connect, and the network might not appear in the list of available networks. The Wireless Mode will often be set to Auto or something similar by default, which enables connection for every kind of network that’s supported. To find the wireless mode setting
Wi-Fi profile settings Windows uses the Wi-Fi profile to save the settings that are needed to connect to a Wi-Fi network. These settings include the network security type, key, network name (SSID), and so on. If you can’t connect to a Wi-Fi network that you could connect to before, it’s possible that the network settings might have changed or the profile is corrupted. To fix this, remove (or "forget") the network connection, then reconnect to the network. When you forget a network connection, it removes the Wi-Fi network profile from your PC. To forget a network
Afterwards, select the Wi-Fi icon on the taskbar and try to reconnect to the network to renew the network connection. Check your home layout Your Wi-Fi network might be affected by the network's frequency band, channel congestion, and/or signal strength. For more info, see Wi-Fi problems and your home layout. Check for additional symptoms for the "No internet connection" icon. There may be additional troubleshooting steps you can try, depending on which symptoms you're having. To view these steps, check out Wi-Fi connection icons and what they mean. Related topics
Things to try firstTry these things first to help you fix or narrow down the connection problem.
To run the Network troubleshooter
Connection problems can be due to a variety of reasons—problems with the website, your device, the Wi-Fi router, modem, or your Internet Service Provider (ISP). Try the following steps to help narrow down the source of the problem.
If you see results like this and are getting a reply, then you have a connection to your Wi-Fi router, so there might be a problem with your modem or ISP. Contact your ISP or check online on another device (if you can) to see if there's a service outage. If the results of the ping test indicate that you are not getting a reply from the router, try connecting your PC directly to your modem by using an Ethernet cable (if you can). If you can connect to the internet using an Ethernet cable, it confirms the connection problem is due to the Wi-Fi router. Make sure you've installed the latest firmware and see the documentation for your router. Run network commands Try running these network commands to manually reset the TCP/IP stack, release and renew the IP address, and flush and reset the DNS client resolver cache:
Uninstall the network adapter driver and restart If the previous steps didn’t work, try to uninstall the network adapter driver, and then restart your computer. Windows will automatically install the latest driver. Consider this approach if your network connection stopped working properly after a recent update. Before uninstalling, make sure you have drivers available as a backup. Visit the PC manufacturer’s website and download the latest network adapter driver from there. If your PC can't connect to the internet, you'll need to download a driver on a different PC and save it to a USB flash drive so you can install the driver on your PC. You’ll need to know the PC manufacturer and model name or number.
Check if your network adapter is compatible with the latest Windows Update If you lost your network connection immediately after upgrading or updating Windows 10, it's possible that the current driver for your network adapter was designed for a previous version of Windows. To check, try temporarily uninstalling the recent Windows Update:
If uninstalling the most recent update restores your network connection, check to see if an updated driver is available:
If Windows can’t find a new driver for your network adapter, visit the PC manufacturer’s website and download the latest network adapter driver from there. You’ll need to know the PC manufacturer and model name or number. Do one of the following:
Use network reset Using network reset should be the last step you try. Consider using it if the steps above don’t help to get you connected. This can help solve connection problems you might have after upgrading from a previous version of Windows to Windows 10. It can also help to fix the problem where you can connect to the internet, but can't connect to shared network drives. Network reset removes any network adapters you have installed and the settings for them. After your PC restarts, any network adapters are reinstalled, and the settings for them are set to the defaults. Note: To use network reset, your PC must be running Windows 10 Version 1607 or later. To see which version of Windows 10 your device is currently running, select the Start button, then select Settings > System > About.
Notes:
Check your Wi-Fi settings Wi-Fi adapter manufacturers might have different advanced settings you can change based on your network environment or connection preferences. Check the Wireless Mode setting for your network adapter and make sure it matches the capabilities of the network you’re trying to connect to. If it doesn’t match, you won’t be able to connect, and the network might not appear in the list of available networks. The Wireless Mode will often be set to Auto or something similar by default, which enables connection for every kind of network that’s supported. To find the wireless mode setting
Wi-Fi profile settings Windows uses the Wi-Fi profile to save the settings that are needed to connect to a Wi-Fi network. These settings include the network security type, key, network name (SSID), and so on. If you can’t connect to a Wi-Fi network that you could connect to before, it’s possible that the network settings might have changed or the profile is corrupted. To fix this, remove (or "forget") the network connection, then reconnect to the network. When you forget a network connection, it removes the Wi-Fi network profile from your PC. To forget a network
Afterwards, select the Wi-Fi icon on the taskbar and try to reconnect to the desired network to renew the network connection. Check your home layout Your Wi-Fi network might be affected by the network's frequency band, channel congestion, and/or signal strength. For more info, see Wi-Fi problems and your home layout. Check for additional symptoms for the "No internet connection" icon There may be additional troubleshooting steps you can try, depending on which symptoms you're having. To view these steps, check out Wi-Fi connection icons and what they mean. Related topics
Let Windows try to help you fix the problem. Try running the Network troubleshooter to see if it can diagnose and fix the problem. Select the Start button, start typing Network problems, and then select Identify and repair network problems in the list. The Network Troubleshooter (mentioned above) can help diagnose and fix common connection problems. After using that, try running the network commands below because the combination of doing these two things can help you get connected. If your problem isn’t fixed after running the Network troubleshooter, try to:
Here's how to run networking commands in a command prompt:
This helps create a new connection to your Internet service provider (ISP). When you do this, everyone that is connected to your Wi-Fi network will be temporarily disconnected. The steps you take to restart your modem and router can vary, but here are the general steps:
Make sure it’s not a problem with your cable modem or Internet service provider (ISP). If it is, contact your ISP.
If the ping is successful and you see results similar to the results above, but you can’t connect to the Internet on your PC, there may be a problem with your modem or Internet service provider (ISP). If you’re still having trouble connecting to a network, it might be related to your network adapter.
If Windows can’t find a new driver for your network adapter, visit the PC manufacturer’s website and download the latest network adapter driver from there. If your PC can't connect to the Internet, you'll need to download a driver on a different PC and save it to a USB flash drive so you can install the driver on your PC. You’ll need to know the PC manufacturer and model name or number. Here are some things to check and try with your router if you’re at home and having trouble getting connected. If you don't see the network name, sign in to your router and check to see if it’s set to broadcast the network name.
Sign in with your user name and password, then look for a setting that says MAC Address Filter or something similar. |