In some Windows environments, the error message " Cloud not open C:Users/xxxxxxxx/AppData/Local/Temp/vpnc.log:5 " is displayed in the log when using OpenConnect-GUI v1.5.3 (stable version) as described in the following article. If you are unable to use the VPN connection with the error message "Cloud not open C:Users/xxxxxxxx/AppData/Local/Temp/vpnc.log:5", please try using OpenConnect-GUI v1.6.2 described in this article.
OpenConnect-GUI v1.6.2 introduced in this article was installed with OpenConnect-GUI v1.5.3 (stable version). TAP driver is assumed to have been installed with the "TAP driver" item checked when installing [OpenConnect-GUI v1.5.3 (stable)].
If you are using the "TAP driver" in OpenConnect-GUI v1.5.3 (stable version) TAP driver in OpenConnect-GUI v1.5.3 (stable version), please try installing it from the following article.
- How to use MillenVPN Native OpenConnect on Windows
- How to use MillenVPN Dedicated Server OpenConnect on Windows
How to set up Windows
Software installation is required to use OpenConnect on Windows.
This procedure allows you to start using OpenConnectGUI in Windows 10/11.
Download the client from the link below.
Double-click the downloaded file and run it.

If the message "Do you want to allow apps from this unknown publisher to make changes to your device?" Click "Yes" when prompted.
Installation will begin. Click "Next".

Click "I agree" when the license agreement is displayed.

Install Options will be displayed. Check "Create openconnect-gui Desktop Icon" and click "Next".

This is the installation destination setting screen. Click "Next".

The Start Menu Settings screen. Click "Next".

Component selection screen. Click "Install".

When the question "Do you want to install this device software? Click "Install" when the question "Do you want to install this device software?
Installation is complete. Click "Finish.
