Invalid Wi-Fi Network Security Key in Windows 10: How to Fix It?

Encountering the "Invalid Wi-Fi Network Security Key" error in Windows 10 is a common issue when trying to connect to a wireless network. This problem typically arises due to an incorrect password entry, driver issues, or incorrect network settings. In this guide, we’ll look at potential causes of this error and effective methods to resolve it, helping you restore a stable network connection.

Causes of the "Invalid Wi-Fi Network Security Key" Error

  • Incorrect password: The most obvious cause is a mistake in entering the password. Ensure that the case, characters, and length match exactly as set on the router.
  • Wi-Fi configuration issues: Network settings may sometimes get disrupted due to Windows updates or router setting changes.
  • Wi-Fi adapter driver issues: Outdated or malfunctioning Wi-Fi adapter drivers can also trigger the error.
  • Encryption incompatibility: Some devices and adapters may not support newer security standards, such as WPA3, which can cause this issue.

Methods to Fix the Issue

1. Verify the Password

Make sure the password is entered exactly as set in the router’s configuration. Pay attention to case sensitivity, as even a single incorrect character can cause the error. Try entering the password again carefully.

2. Restart Your Router and Computer

Restarting your devices can help clear temporary connection issues. First, reboot the router, then restart your computer, and attempt to reconnect to the Wi-Fi network.

3. Forget the Network and Reconnect

Removing and reconnecting to the network can refresh the settings and fix the error.

  1. Open Settings > Network & Internet > Wi-Fi.
  2. Locate the network, click on it, and select Forget.
  3. Then reconnect to the network, entering the password again.

4. Update Your Wi-Fi Adapter Driver

Outdated drivers can lead to various network issues. Check if an update is available:

  1. Right-click on Start and select Device Manager.
  2. Locate the Network Adapters section, then right-click on your Wi-Fi adapter and select Update driver.
  3. Select Search automatically for updated driver software.

5. Check the Router’s Encryption Settings

If your router is set to use WPA3 or another advanced encryption standard, it may cause issues with older devices. Try changing the encryption settings to WPA2:

  1. Open your router’s settings by entering its IP address in a browser (usually 192.168.0.1 or 192.168.1.1).
  2. Log in with the username and password found on the router.
  3. Go to the Wi-Fi security settings section and select WPA2 as the encryption type.
  4. Save the settings and restart the router.

6. Check for Windows Updates

Windows updates may include fixes for network issues. Check for available updates:

  1. Open Settings > Update & Security > Windows Update.
  2. Click Check for updates and install any available updates.