BOSIDE 登陆不上？？？急 急 急

打开boside 提示 发生时间： 2014-02-27 14:00:37错误来源：
错误类型： System.Data.SqlClient.SqlException, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
错误信息： A connection was successfully established with the server, but then an error occurred during the login process. (provider: TCP Provider, error: 0 - 指定的网络名不再可用。)
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调用堆栈：
at Kingdee.BOS.ServiceHelper.DataCenterService.GetLangList(Context ctx)
at Kingdee.BOS.ServiceFacade.ServicesStub.Account.AccountService.GetDataCenterLoginLanguages(String dbId, DatabaseType dbType, String clientLCName)

昨天还好好的，什么也没有动。今天到客户现场 就成这样了，求指导