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Exception 'GetAuthenticationStateAsync was called before SetAuthenticationState.' thrown when calling AuthenticationStateProvider.GetAuthenticationStateAsync() method

See original GitHub issue

Describe the bug

In my Blazor Server app, exactly as described in this bug report,

‘GetAuthenticationStateAsync was called before SetAuthenticationState.’

the GetAuthenticationStateAsync works only if the AuthenticationStateProvider service is synchronously called from a Blazor page.

In any async call running in the background it fails with the mentioned error message.

To Reproduce

Here is a sample repo: BlazorAppWithAuthenticationError

Just start the application and click on Fetch Data, the exception will be thrown immediately at the line 23 of the AuthTokenHandler class. I am using the HttpClient Factory pattern, which seems to lead to the issue.

Exceptions (if any)

System.InvalidOperationException: GetAuthenticationStateAsync was called before SetAuthenticationState.
   at Microsoft.AspNetCore.Components.Server.ServerAuthenticationStateProvider.GetAuthenticationStateAsync()
   at MyClasss.ExecuteAsync
...

Further technical details

ASP.NET Core version 5
output of dotnet --info .NET SDK (reflecting any global.json): Version: 5.0.101 Commit: d05174dc5a

Runtime Environment: OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\5.0.101\

Host (useful for support): Version: 5.0.1 Commit: b02e13abab

.NET SDKs installed: 3.0.100 [C:\Program Files\dotnet\sdk] 3.1.100 [C:\Program Files\dotnet\sdk] 3.1.301 [C:\Program Files\dotnet\sdk] 5.0.101 [C:\Program Files\dotnet\sdk]

.NET runtimes installed: Microsoft.AspNetCore.All 2.1.21 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.21 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.10 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.1.21 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.10 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.10 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 5.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Visual Studio 2019 16.8.3

Issue Analytics

State:
Created 3 years ago
Reactions:6
Comments:42 (10 by maintainers)

Top GitHub Comments

12reactions

agilenutcommented, Jul 15, 2021

This issue is still occurring when injecting AuthenticationStateProvider into a DelegatingHandler with latest .Net 5.

We really need a consistent way to get access to the user context. It is silly to have to do one thing when we are in Blazor land and another thing when we have a full HttpContext.

Status or workaround?

12reactions

Panzerfurycommented, Apr 17, 2021

I think this should be a priority.

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