@hevrens After analysing the error message you sent, I see that .NET v8.0.16 is still missing. Please install .NET v.8.0.16 (https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-desktop-8.0.16-windows-x64-installer). Reboot your computer and then try updating the VPN Pro client again. This was proven to work in the majority of cases, so hopefully it will help.