The following are specific things you can check in Windows to help troubleshoot Wi-Fi problems.
Wi-Fi driver version
Installing the latest driver for your device is usually the best policy because it has all the latest fixes for your device. However, sometimes using an older driver is better because the same driver files are used for different PC models at times, but things don’t always work as expected.
If you’re having problems with your Wi-Fi connection and you think it’s not something in your home, make sure you have the latest driver installed for your wireless network adapter.
To check for the latest drivers
- In the search box next to the Start button on the taskbar, type device manager, and then select Device Manager from the list of results
- In Device Manager, select Network adapters > the network adapter name.
- Press and hold (or right-click) the network adapter name, and then select Update driver > Search automatically for updated driver software. Follow the steps, then select Close.
If a new driver is found, it’ll be downloaded and installed automatically.
- After you install the updated driver, select the Start button > Power > Restart if you're asked to restart, and see if that fixes the connection issue.
If a new driver isn't found, check the device manufacturer’s website for the latest driver, download it, and then install it manually. To learn how to do this, see Fix network connection issues.
If you install a new network adapter driver and your Wi-Fi connection gets worse after that, you can roll back the driver to the previous version. (To learn how, see Fix network connection issues.) The same is true if you already have the latest driver and want to use an older driver version instead.
Wireless driver 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
- In Device Manager, select Network adapters, and then double-click the network adapter name.
- Select the Advanced tab and look for a Wireless Mode setting. Make sure it’s set to the mode your network is using.
Wi-Fi profile doesn’t match
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
- Select the Wi-Fi network icon on the right side of the taskbar, then select Network & Internet settings.
- Select Wi-Fi , then select Manage known networks.
- Select the network you want to forget, then select Forget.
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