WriteStatus("   Building secure environment.");
try
{
    string applicationManifest = "<manifest></manifest>";
    if (File.Exists("rpc.xml"))
    {
        StreamReader manifestReader = File.OpenText("rpc.xml");
        applicationManifest = manifestReader.ReadToEnd();
    }

    if (_secureEnv == null)
    {
        if (SecureEnvironment.IsUserActivated(new ContentUser(
                    _currentUserId, AuthenticationType.Windows)))
        {
            _secureEnv = SecureEnvironment.Create(
                applicationManifest, new ContentUser(
                    _currentUserId, AuthenticationType.Windows));
        }
        else
        {
            _secureEnv = SecureEnvironment.Create(
                applicationManifest,
                AuthenticationType.Windows,
                UserActivationMode.Permanent);
        }
    }
}
catch (RightsManagementException ex)
{
    MessageBox.Show("ERROR: Failed to build secure environment.\n" +
        "Exception: " + ex.Message + "\n\n" +
        ex.FailureCode.ToString() + "\n\n" + ex.StackTrace,
        "Rights Management Exception",
        MessageBoxButton.OK, MessageBoxImage.Error);
    return false;
}