它与此问题类似，但它不包含任何修复：TCP Provider: The semaphore timeout period has expired
我正在使用企业lib瞬态故障处理（v 6.x）和重试策略。我已经使用了多年，这个错误是一个新错误。也许是由于我们的网络服务器上的Windows更新（赢得2012r2）
因为没有更改C＃代码而且我使用企业库已经很久了......它必须与Windows /硬件相关吗？
我发现了这个问题，并说winsock related以及有关usb驱动程序的一些消息来源？
有一个known issue with vip swaps，但我们正在运行我们自己的内部2012r2上的webapps（webforms和mvc应用都有此问题）
这是一个堆栈跟踪：
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
System.Data.SqlClient.TdsParserStateObject.ReadSniError(TdsParserStateObject stateObj, UInt32 error)
System.Data.SqlClient.TdsParserStateObject.ReadSniSyncOverAsync()
System.Data.SqlClient.TdsParserStateObject.TryReadNetworkPacket()
System.Data.SqlClient.TdsParserStateObject.TryPrepareBuffer()
System.Data.SqlClient.TdsParserStateObject.TryReadByte(Byte& value)
System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
System.Data.SqlClient.SqlDataReader.get_MetaData()
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption)
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)
System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)
Shop.Dal.DB.<>c__DisplayClass2_0.<GetDatatable>b__0()
Microsoft.Practices.EnterpriseLibrary.TransientFaultHandling.RetryPolicy.<>c__DisplayClass1.<ExecuteAction>b__0()
Microsoft.Practices.EnterpriseLibrary.TransientFaultHandling.RetryPolicy.ExecuteAction[TResult](Func`1 func)
Shop.Dal.DB.GetDatatable(SqlCommand com) The semaphore timeout period has expired