Troubleshooting "Invalid parameter" errors on Windows 10
This error primarily occurs due to a bug in Windows 10.
Performing the settings below may reset Windows system settings, potentially preventing other applications from functioning properly.
Therefore, please perform the following operations at your own risk.
【1】Command Prompt
1. Click "Windows Start Menu" > "Windows System Tools" > "Command Prompt". Right-click and select "More" > "Run as administrator".

2. After clicking "Run as administrator," if the message shown in the image below appears, click "Yes."

3. Enter the following at the command prompt screen that appears, then press the Enter key.
netsh int ip reset

Next, enter the following in the Command Prompt and press the Enter key.
netsh int ipv6 reset

Next, enter the following in the Command Prompt and press the Enter key.
netsh winsock reset

4. Restart your computer.
【2】Device Manager
1. Right-click the Windows Start menu, then click Device Manager.

2. Click the ">" next to "Network Adapter".
3. Right-click the network adapter starting with "WAN Miniport" and select "Uninstall device" to uninstall all of them.

4. Once you have uninstalled all "WAN Miniports," proceed to click "Action" > "Scan for hardware changes."

5. The network adapter starting with "WAN Miniport" that you uninstalled earlier will reappear.
6. Restart your computer.
Once steps [1] and [2] above are complete, please attempt to reconnect to MillenVPN Native and verify if the connection is successful.