https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.authentication.remoteauthenticationoptions.backchannelhttphandler?view=aspnetcore-10.0
RemoteAuthenticationOptions.BackchannelHttpHandler Property (Microsoft.AspNetCore.Authentication) |...
The HttpMessageHandler used to communicate with remote identity provider. This cannot be set at the same time as BackchannelCertificateValidator unless the...
propertymicrosoftaspnetcoreauthentication