iOS/MAUI调用MSAL AcquireTokenSilent遇AADB2C90080错误求助

仅在单个iOS部署实例中，调用MSAL的await ClientApplication.AcquireTokenSilent方法时触发错误：

AADB2C90080: The provided grant has expired. Please re-authenticate and try again.

调用该方法前，已成功执行以下交互式登录代码：

public async Task DoLogin(bool forceInteractive = false, CancellationToken token = default)
{

    bool tryInteractive = false;
    if (!forceInteractive)
    {
        try
        {
            var accounts = (await ClientApplication.GetAccountsAsync(SignInSignOutPolicy)).ToList();
            if (accounts.Any())
            {
                var result = await ClientApplication.AcquireTokenSilent(new string[] { ApiScope }, accounts.First()).ExecuteAsync();
                IsLoggedIn = !string.IsNullOrEmpty(result.AccessToken);
                tryInteractive = !IsLoggedIn;
            }
            else
                tryInteractive = true;
        }
        catch (MsalUiRequiredException)
        {
            tryInteractive = true;
        }
        catch (Exception ex)
        {
            await Alert.Handle(ex.Message).GetAwaiter();
        }
    }
    else
        tryInteractive = true;
    if (tryInteractive)
    {
        try
        {
            var result = await ClientApplication.AcquireTokenInteractive(new string[] { ApiScope })
                        .WithPrompt(Prompt.SelectAccount).ExecuteAsync(token);
            IsLoggedIn = !string.IsNullOrEmpty(result.AccessToken);

        }
        catch (Exception ex)
        {
            await Alert.Handle(ex.Message).GetAwaiter();
        }
    }
}

出错的ProcessImage方法代码如下：

public async Task<RunesPostResponse?> ProcessImage(byte[] imageBytes, CancellationToken token = default)
{
    try
    {
        RunesPostResponse? resp = null;
        var accounts = (await ClientApplication.GetAccountsAsync(SignInSignOutPolicy)).ToList();

        var result = await ClientApplication.AcquireTokenSilent(new string[] { ApiScope },
 accounts.First()).WithForceRefresh(true).ExecuteAsync(token); //exception on this line
        using (var client = Create())
        {
            client.DefaultRequestHeaders.Authorization =
                    new AuthenticationHeaderValue("Bearer", result.AccessToken);
            using (var content = new ByteArrayContent(imageBytes))
            {
                content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
                var response = await client.PostAsync("process_image/", content, token);
                if (response.IsSuccessStatusCode)
                {
                    var raw = await response.Content.ReadFromJsonAsync<RunesResponseRaw>(cancellationToken: token);
                    if (raw != null)
                    {
                        resp = new RunesPostResponse();
                        resp.Annotations = raw.annotations;
                        resp.Success = raw.success;
                        resp.AnnotatedImage = Convert.FromBase64String(raw.annotatedImage);
                    }

                }
            }
        }
        return resp;
    }
    catch(Exception ex)
    {
        throw;
    }
}

曾怀疑是iOS钥匙串缓存问题，尝试执行以下代码但未解决：

private async void ReactiveContentPage_Loaded(object sender, EventArgs e)
{
#if IOS
        SecureStorage.Default.RemoveAll();
#endif
}

请求协助排查并解决该授权过期错误。

内容的提问来源于stack exchange，提问作者LeeAdama