Some Windows 11 users encounter the error message “The network security key isn’t correct” while trying to connect to a Wi-Fi network. Even when entering the correct Wi-Fi password, Windows may refuse to connect and repeatedly display the same warning.
This issue is commonly caused by incorrect saved Wi-Fi credentials, router encryption mismatches, outdated network drivers, corrupted network settings, keyboard layout issues, or router configuration problems. Sometimes Windows updates, hidden special characters in passwords, or incompatible security protocols may also trigger the error.
In this guide, we’ll walk you through several effective methods to fix the “The network security key isn’t correct” error on Windows 11.
How to Fix “The Network Security Key Isn’t Correct” on Windows 11
Before trying advanced troubleshooting methods, verify that you are entering the correct Wi-Fi password exactly as configured on the router. Wi-Fi passwords are case-sensitive. Follow the methods below in order for the best results.
1. Restart Your PC and Router
Temporary network glitches may prevent proper Wi-Fi authentication.
- Restart your Windows PC.
- Power off the router for about 30 seconds.
- Turn the router back on.
- Retry connecting to the Wi-Fi network.
Restarting refreshes both the wireless adapter and router authentication services.
2. Forget and Reconnect to the Wi-Fi Network
Corrupted saved Wi-Fi credentials may trigger authentication failures.
- Open:
Settings > Network & internet > Wi-Fi - Click:
Manage known networks - Select the problematic Wi-Fi network.
- Click:
Forget - Reconnect to the network manually and re-enter the password.
This refreshes stored network credentials.
3. Verify Keyboard Layout and Caps Lock
Incorrect keyboard layouts may cause wrong password input.
Check:
- Caps Lock status
- Num Lock status
- Active keyboard language/layout
Special characters may differ between layouts.
4. Check the Router Password
Ensure the Wi-Fi password has not changed recently.
You can:
- Verify the password from the router admin panel
- Check the label on the router if default credentials are used
- Ask the network administrator if applicable
Even small password mismatches will trigger the error.
5. Update Wireless Network Drivers
Outdated Wi-Fi drivers may cause authentication problems.
- Press:
Windows + X - Open:
Device Manager - Expand:
Network adapters - Right-click your Wi-Fi adapter.
- Select:
Update driver
You can also download drivers directly from:
- Intel
- Realtek
- Qualcomm
6. Change Wi-Fi Security Mode on the Router
Incompatible encryption methods may prevent Windows from connecting.
Access the router settings and try changing:
- WPA3 → WPA2
- WPA2/WPA3 Mixed Mode → WPA2 only
Older Wi-Fi adapters sometimes struggle with newer security protocols.
7. Run the Network Troubleshooter
Windows includes built-in network repair tools.
- Open:
Settings > System > Troubleshoot > Other troubleshooters - Run:
Network Adapter Troubleshooter
Allow Windows to detect and repair networking problems automatically.
8. Reset Network Settings
Corrupted network configurations may trigger Wi-Fi authentication issues.
- Open:
Settings > Network & internet > Advanced network settings - Select:
Network reset - Click:
Reset now - Restart your PC afterward.
This reinstalls network adapters and resets networking components.
9. Disable and Re-Enable the Wi-Fi Adapter
Refreshing the wireless adapter may restore proper connectivity.
- Press:
Windows + X - Open:
Device Manager - Expand:
Network adapters - Right-click the Wi-Fi adapter and choose:
Disable device - Wait a few seconds.
- Re-enable the adapter.
Retry the Wi-Fi connection afterward.
10. Update Router Firmware
Outdated router firmware may cause wireless authentication problems.
Visit the router manufacturer’s support page and install the latest firmware update.
Common router brands include:
- TP-Link
- Netgear
- ASUS
- D-Link
Updated firmware often improves compatibility with modern Windows devices.
Additional Tips
To reduce future Wi-Fi authentication problems:
- Avoid overly complex unsupported symbols in passwords
- Keep Windows updated
- Use WPA2 or WPA3 security
- Restart routers periodically
- Maintain updated network drivers
These practices improve wireless stability and compatibility.
Conclusion
The “The network security key isn’t correct” error on Windows is usually caused by incorrect saved credentials, Wi-Fi security mismatches, outdated drivers, corrupted network settings, or router-related issues. Fortunately, most users can resolve the problem using methods such as forgetting the network, updating drivers, resetting network settings, or adjusting router security modes.
By following the solutions outlined above, you should be able to reconnect to your Wi-Fi network successfully on Windows 11.
