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我遇到连接到SQL Server 2012的远程实例的服务的问题.

.NET 2.0服务在客户端计算机上运行,​​它使用TCP/IP连接到当前运行SQL Server 2012实例的远程Web服务器.该Web服务器曾经是Windows Server 2003和SQL Server 2005并已升级6几个月前没有任何问题.然后,该服务检查是否有任何需要下载的数据.

客户端机器

• Windows Server 2003

网络服务器

• Windows Server 2012
• SQL Server 2012

直到上周五它突然停止工作并且它给出以下错误日志消息,这运行正常5年以上

Event Type: Warning
Event Source:   
Event Category: None
Event ID:   0
Date:       21/05/2013
Time:       16:45:11
User:       N/A
Computer:   
Description:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Data.SqlClient.SqlException: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject …