System::Security::Cryptography::X509Certificates warning with C++/CLI and .NET 9.

[SamuelBaillargeon-Creaform]

We currently have a C++/CLI project on .NET Framework 4.7.2, which uses CefSharp. We want to migrate it to .NET 9.0.

I found out online that the CefSharp packages which we are currently using (cef.redist.x64, CefSharp.Common, CefSharp.WinForms) are incompatible with .NET 9. So I installed the NETCore packages (chromiumembeddedframework.runtime, CefSharp.Common.NETCore, CefSharp.WinForms.NETCore). I followed the steps in the quick start guide.

Now, I have this warning in the output when I try to build the project.

1>Y:\BETA\VXelements\UtilitiesGui\Controls\WebBrowser.cpp(12,1): warning C4691: 'System::Security::Cryptography::X509Certificates::X509Certificate2Collection': type referenced was expected in unreferenced assembly 'System.Security.Cryptography.X509Certificates', type defined in current translation unit used instead
1>(compiling source file '/VXelements/UtilitiesGui/Controls/WebBrowser.cpp')
1> Y:\BETA\VXelements\UtilitiesGui\Controls\WebBrowser.cpp(12,1):
1> This diagnostic occurred while importing type 'CefSharp::IRequestHandler' from assembly 'CefSharp, Version=137.0.100.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138'.
1> Y:\BETA\VXelements\UtilitiesGui\Controls\WebBrowser.cpp(12,1):
1> This diagnostic occurred while importing type 'CefSharp::Handler::RequestHandler' from assembly 'CefSharp, Version=137.0.100.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138'.

I made sure that my project references System.Security.Cryptography.X509Certificates. I am able to instantiate a System::Security::Cryptography::X509Certificates::X509Certificate2Collection without problem in my code.

Does someone know how to resolve this warning?

[SamuelBaillargeon-Creaform]

I have found this issue on the dotnet sdk, suggesting that it is a known issue, which Microsoft does not plan to resolve.