What about the errors messages?
Please use the trainer option request system for requesting new options be added to this trainer and/or vote on options already requested.
Works fine here. Completely uninstall your AV, firewall or other security software to make sure it's not interfering. Install/reinstall both x86 and x64 of .NET Core v3.1.
Have all of the following installed.
.NET Core 3.1 Desktop Runtime x86 Link
.NET Core 3.1 Desktop Runtime x64 Link
.NET Core Current Runtime x86 Link
.NET Core Current Runtime x64 Link
.NET Framework (get latest) Link
(Both x86 and x64 of the .Net Core MUST be installed)
Reboot PC when done.