Microsoft.Lync.Model.LyncClient.BeginSignIn 异常:System.Invali

Question

我正在使用 Lync 客户端登录帐户：

_LyncClient = LyncClient.GetClient(true);
if (_LyncClient == null)
{
    throw new Exception("Unable to obtain client interface");
}
_LyncClient.SignInDelayed += _LyncClient_SignInDelayed;
_LyncClient.StateChanged += _LyncClient_StateChanged;
_LyncClient.CredentialRequested += _LyncClient_CredentialRequested;
......
try
{     
    if (_LyncClient.State == ClientState.SignedIn)
    {
        _LyncClient.BeginSignOut(
            ar =>
            {
                //Set a class field flag so that the application 
                //shuts down the Lync platform when the application closes
                _LyncClient.EndInitialize(ar);
            },
            null);
    }
    if (_LyncClient.State == ClientState.Uninitialized)
    {
        _LyncClient.BeginInitialize(
            ar =>
            {
                //Set a class field flag so that the application 
                //shuts down the Lync platform when the application closes
                _LyncClient.EndInitialize(ar);
                //_LyncClient.StateChanged += _LyncClient_StateChanged;
            },
            null);
    }
    if (_LyncClient.State == ClientState.SignedOut)
    {
        if (_callback != null)
            _callback.OnSignInStart();
        _LyncClient.BeginSignIn(
            this.email,
            upnOrDomainUserName,
            password,
            ar =>
            {
                _LyncClient.EndSignIn(ar);
                if (_callback != null)
                {
                    _callback.OnSignInSuccess();
                }
            },
            null);
    }
}
catch (NotStartedByUserException h)
{
    throw new Exception("Lync is not running: " + h);
}
catch (Exception ex)
{
    throw new Exception("General Exception: " + ex);
}

但是，此代码会生成异常：

    General Exception: System.InvalidOperationException: Operation is not valid due to the current state of the object. at Microsoft.Lync.Model.LyncClient.BeginSignIn(String userUri, String domainAndUsername, String password, AsyncCallback communicatorClientCallback, Object state)

什么会导致这种情况？我无法从搜索中找到任何信息。该代码作为 Windows 服务运行。

谢谢

Answer 1

我也

做了一个快速的谷歌搜索，你的问题可能是环境问题。在此处查看相同的错误。