Powershell：创建运行空间失败

Question

我有一个C＃组件，它在PowerShell环境中执行Powershell脚本。突然它开始显示一些问题，现在，当我尝试执行以下操作时，它显示异常

Enter-PSSession -ComputerName 192.21.10.71 -Credential abc\admin

下面给出例外情况......

Enter-PSSession : Connecting to remote server failed with the following error message : 
The WS-Management service cannot process the request. **This user is allowed a maximum 
number of 5 concurrent shells, which has been exceeded.** Close existing shells or raise 
the quota for this user. For more information, see the about_Remote_Troubleshooting 
Help topic.
At line:1 char:16
+ Enter-PSSession <<<<  -ComputerName 192.21.10.71 -Credential abc\admin
    + CategoryInfo          : InvalidArgument: (192.21.10.71:String) [Enter-PSSession], 
PSRemotingTransportException
    + FullyQualifiedErrorId : CreateRemoteRunspaceFailed

我担心，这是因为我没有正确关闭/处理在c＃组件中创建的运行空间。 这是从我的组件中提取的代码

    ......
Collection<PSObject> objPS = new Collection<PSObject>();
PowerShell powershell = PowerShell.Create();
PSCredential credential = new PSCredential(strUserName, password);
objRunspace = RunspaceFactory.CreateRunspace();
objRunspace.Open();
objPS = powershell.Invoke();
......
finally 
        {
            objRunspace.Dispose();
        }

我正在击败灌木丛，而不是找到这个问题的根本原因。

...谢谢