While installing Connect Tunnel users may see a warning dialog indicating that the Aventail VPN Adapter has not passed Windows Logo testing, as shown in the following screenshot:
The drivers for Connect Tunnel and OnDemand Tunnel are currently not signed. SonicWall is working to get these drivers signed by Microsoft. By default, the installer program suppresses the Windows warning message, but in some cases where you have more restricted group policies you may see this error above.
As a workaround you can follow these steps to make a client system ignore this warning.
On the System Properties page on the computer, click the Hardware tab:
Click Driver Signing and then enable the option named Ignore - Install the software anyway and don't ask for my approval: