Requested security protocol is not supported - at System.Net.ServicePointManager.ValidateSecurityProtocol(SecurityProtocolType value)

Hi,

I am working on a project where I am using a .NET library in native C++ via C++/Clr. I can execute the code and the dialog from the .NET library starts correctly (https://www.bimcollab.com/en/resources/developers/developer-sdk/).

But it seems that the security protocol that is being used is not supported. I have tried to analyze the error message and think that the problem is related to the security settings.

Can someone explain how I can fix this problem? Is there any way to update or customize the security logs to fix this error?

I would be very grateful for any help or advice you can give me. Many thanks in advance!

Exception:

Exception

The requested security protocol is not supported.
   at System.Net.ServicePointManager.ValidateSecurityProtocol(SecurityProtocolType value)
   at System.Net.ServicePointManager.set_SecurityProtocol(SecurityProtocolType value)
   at XLGnKXvXMGMh6CYEeEp.MDVV5rvEFtsd1GaX3pt.Iavn90tDwt9tSqVhI6C9(SecurityProtocolType)
   at XLGnKXvXMGMh6CYEeEp.MDVV5rvEFtsd1GaX3pt.l70vramEUL()
   at XLGnKXvXMGMh6CYEeEp.MDVV5rvEFtsd1GaX3pt.GuPgGhtkyADrIpqdOBMG()
   at XLGnKXvXMGMh6CYEeEp.MDVV5rvEFtsd1GaX3pt.xJNv0y6YDh()
   at BCF_Manager.DlgMain.TWAEUy3oeMWUsN4TCkQ()
   at BCF_Manager.DlgMain.Initialize()
   at BIMcollab_User_Control_Sample.Form1..ctor()
   at CLR.startDlg()

External Library:

Requirements 
The following requirements must be met to make use of the BIMcollab Connector:  

• The 3rd party application must be capable of integrating a UserControl built for .NET Framework 4.8 
• The 3rd party application must provide methods to retrieve and set camera settings, clipping planes as well as the visible and/or selected components 
• The 3rd party application must be able to run with the ‘Prefer 32-bit ’flag in the ‘Build – General settings ’switched off. 
• The Microsoft Visual C++ 2010 Redistributable Package must be added as a prerequisite for your application. 

My Setup:

.NET BimCollab library Framework 7.0

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net7.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWindowsForms>true</UseWindowsForms>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\AppInterface\AppInterface.csproj" />
  </ItemGroup>

  <ItemGroup>
    <Reference Include="BCFManagerControlLib">
      <HintPath>BCFManagerControlLib.dll</HintPath>
    </Reference>
  </ItemGroup>

</Project>

CLR / C++ Properties

C++ / CLR Code

CSHARP_API void CLR::startDlg() {
  try {
    auto lDlg = gcnew BIMcollab_User_Control_Sample::Form1();
    lDlg->Show();
  } catch (Exception ^ e) {
    auto lMsg = e->Message;
    Console::WriteLine(lMsg);
    Console::WriteLine(e->StackTrace->ToString());
  }
}

C++ native

bool plugin_x64_init(CwAPI3D::ControllerFactory* aFactory) {
  actory->getUtilityController()->printToConsole(lFormatted.data());
  CLR::startDlg();

  return false;
}