[QUERY] Even with credential caching, keep getting prompted for credentials

[flcdrg]

Library name and version

Azure.Identity: 1.13.2

Query/Question

I've created a simple console app with code like this. My expectation was that with the on-disk caching enabled, that the second time I run the application it would use the cached credentials. But instead it prompts me every time for credentials. What am I doing wrong?

using Azure.Core;
using Azure.Core.Diagnostics;
using Azure.Identity;
using Microsoft.Graph;

const string AUTH_RECORD_PATH = "./tokencache.bin";

string ClientId = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
string[] scopes = ["user.read", "calendars.readwrite"];

// Setup a listener to monitor logged events.
using AzureEventSourceListener listener = AzureEventSourceListener.CreateConsoleLogger();

var persistenceOptions = new TokenCachePersistenceOptions
{
    Name = "my_application_name"
};

AuthenticationRecord authRecord = null;

if (File.Exists(AUTH_RECORD_PATH))
{
    await using var authRecordStream = new FileStream(AUTH_RECORD_PATH, FileMode.Open, FileAccess.Read);
    authRecord = await AuthenticationRecord.DeserializeAsync(authRecordStream);
}

var credential = new InteractiveBrowserCredential(
    new InteractiveBrowserCredentialOptions
    {
        ClientId = ClientId,
        TokenCachePersistenceOptions = persistenceOptions,
        AuthenticationRecord = authRecord,
    }
);

authRecord = await credential.AuthenticateAsync(new TokenRequestContext(scopes));

await using (var authRecordStream = new FileStream(AUTH_RECORD_PATH, FileMode.Create, FileAccess.Write))
{
    await authRecord.SerializeAsync(authRecordStream);
}

var graphClient = new GraphServiceClient(credential, scopes);

var user = await graphClient.Me.GetAsync();

Console.WriteLine($"Hello {user.DisplayName}!");

Environment

.NET SDK:
 Version:           8.0.408
 Commit:            e6663e9b3d
 Workload version:  8.0.400-manifests.dab961c0
 MSBuild version:   17.11.26+2b19be476

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.26100
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\8.0.408\

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
There are no installed workloads to display.

Host:
  Version:      9.0.4
  Architecture: x64
  Commit:       f57e6dc747

.NET SDKs installed:
  3.1.426 [C:\Program Files\dotnet\sdk]
  6.0.428 [C:\Program Files\dotnet\sdk]
  8.0.408 [C:\Program Files\dotnet\sdk]
  9.0.203 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 9.0.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  Not set

global.json file:
  D:\global.json

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

[jsquire]

Thank you for your feedback. Tagging and routing to the team member best able to assist.