microsoft-authentication-library-for-dotnet: GetAccountsAsync() does Instance Discovery call...will not work off-line

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name: Bug report about: Pca.GetAccountsAsync() does not work offline

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Which Version of MSAL are you using ? MSAL 2.2.0-preview (Latest)

Which platform has the issue? UWP, Xamarin android, . Cannot test iOS due to this issue with PCA and iOS simulator.

What authentication flow has the issue?

• Desktop
  • Interactive
  • WIA
  • U/P
  • Device code flow (browserless)
• Mobile
• Web App
  • Authorization code
  • OBO
• Web API
  • OBO

Other? - please describe;

Repro v1.x works offline. This line in v2.x:

IEnumerable<IAccount> accounts = await Pca.GetAccountsAsync();

throws

$exception | {System.Net.Http.HttpRequestException: An error occurred while sending the request. —>

Expected behavior Needs to return the tokens already in the cache

Actual behavior Exception thrown, show is over.

Additional context/ Logs / Screenshots

Here is my code:

public async Task<AuthenticationResult> AcquireTokenForSignInSilentlyAsync()
        {
            AuthenticationResult authenticationResult = null;

            try
            {
                IEnumerable<IAccount> accounts = await Pca.GetAccountsAsync();
                authenticationResult =
                    await Pca.AcquireTokenSilentAsync(_scopes, GetAccountByPolicy(accounts, _policySignUpSignIn));
            }
            catch (Exception e)
            {
                //Do nothing as will force a login.
            }

            return authenticationResult;
        }

private IAccount GetAccountByPolicy(IEnumerable<IAccount> accounts, string policy)
        {
            IAccount foundAccount = null;

            foreach (IAccount account in accounts)
            {
                string userIdentifier = account.HomeAccountId.Identifier.Split('.')[0];
                if (userIdentifier.EndsWith(policy.ToLower()))
                {
                    foundAccount = account;
                    break;
                }
            }

            return foundAccount;
        }

What am I missing?