'GetAuthenticationStateAsync was called before SetAuthenticationState.'

Describe the bug

GetAuthenticationStateAsync throws an InvalidOperationException with the message:

'GetAuthenticationStateAsync was called before SetAuthenticationState.'

I do not know if this is an actual bug or just a lack of documentation on its correct use.

ref: https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.components.server.serverauthenticationstateprovider?view=aspnetcore-3.0

To Reproduce

Inject a ServerAuthenticationStateProvider into a page. Then call 'GetAuthenticationStateAsync in any of its async-events.

Further technical details

<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="3.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="3.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="3.0.0" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.0.0" />

[TimBurris]

Much like @eddiepaz , i’m still exeriencing the same issue. i think for me it’s because i’m using custom Middleware and utilizing IServiceProvider with CreateScope to created a Scoped instance of my User provider.

the error can be demonstrated with the following (serviceProvider is an injected IServiceProvider):

using (var serviceScope = serviceProvider.CreateScope())
{
    var service = serviceScope.ServiceProvider.GetRequiredService<AuthenticationStateProvider>();
    var state= await service.GetAuthenticationStateAsync();
}

[SteveSandersonMS]

Inject a ServerAuthenticationStateProvider into a page.

This is the problem. Don’t do that, because you’ll just receive an uninitialized instance.

You need to use the instance provided by the framework, which has been initialized. To get that, inject an AuthenticationStateProvider instead of ServerAuthenticationStateProvider.

For anyone else posting here, your issues may be different, since maybe you were not trying to inject ServerAuthenticationStateProvider. If you still have trouble, could you please post a separate issue with repro steps for your scenario? Thanks!