今天帮一个朋友搞服务器，全部安装调试后，把服务器放回机房，可是Program Neighborhood客户端无法打开程序。
错误信息：
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ERROR
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Cannot connect to the Citrix MetaFrame server.
An I/O (Input/Output) error occurred while your request was being processed.
Citrix Program Neighborhood
Try to connect again. If you continue to receive this message, contact your Citrix administrator.
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确定
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经过好长一段时间检查原来是自己疏忽大意了，Program Neighborhood客户端指定的IP没有改成最新的IP。