C# System.Security.Authentication.AuthenticationException（调用SSPI失败）

在StackOverflow上发现了许多这样的帖子，但都没有解决这个问题

从过去几个月以来，我们就遇到了这个异常，并且正在努力修复它。每小时只有少数请求（大约10个）会变成此异常

每小时SSPI异常数

堆栈跟踪：

A call to SSPI failed, see inner exception. - System.Security.Authentication.AuthenticationException: A call to SSPI failed, see inner exception. ---> System.ComponentModel.Win32Exception: The message or signature supplied for verification has been altered
   --- End of inner exception stack trace ---
   at System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken message, AsyncProtocolRequest asyncRequest, Exception exception)
   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
   at MySql.Data.MySqlClient.NativeDriver.StartSSL()
   at MySql.Data.MySqlClient.NativeDriver.Open()
   at MySql.Data.MySqlClient.Driver.Open()
   at MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings)
   at MySql.Data.MySqlClient.MySqlPool.CreateNewPooledConnection()
   at MySql.Data.MySqlClient.MySqlPool.GetPooledConnection()
   at MySql.Data.MySqlClient.MySqlPool.TryToGetDriver()
   at MySql.Data.MySqlClient.MySqlPool.GetConnection()
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at Dapper.SqlMapper.<QueryImpl>d__61`1.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at Dapper.SqlMapper.Query[T](IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Boolean buffered, Nullable`1 commandTimeout, Nullable`1 commandType)
   at <Path to a method>

调用SSPI失败，请参阅内部异常。-System.Security.Authentication.AuthenticationException:调用SSPI失败，请参阅内部异常。-->System.ComponentModel.Win32异常：为验证提供的消息或签名已被更改
---内部异常堆栈跟踪的结束---
位于System.Net.Security.SslState.StartSendAuthResetSignal（ProtocolToken消息、AsyncProtocolRequest asyncRequest、异常）
在System.Net.Security.SslState.CheckCompletionBeforeNextReceive（ProtocolToken消息，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.ProcessReceivedBlob（字节[]缓冲区，Int32计数，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.StartReceiveBlob（字节[]缓冲区，AsyncProtocolRequest asyncRequest）
在System.Net.Security.SslState.CheckCompletionBeforeNextReceive（ProtocolToken消息，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.ProcessReceivedBlob（字节[]缓冲区，Int32计数，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.StartReceiveBlob（字节[]缓冲区，AsyncProtocolRequest asyncRequest）
在System.Net.Security.SslState.CheckCompletionBeforeNextReceive（ProtocolToken消息，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.ProcessReceivedBlob（字节[]缓冲区，Int32计数，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.StartReceiveBlob（字节[]缓冲区，AsyncProtocolRequest asyncRequest）
在System.Net.Security.SslState.CheckCompletionBeforeNextReceive（ProtocolToken消息，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.ProcessReceivedBlob（字节[]缓冲区，Int32计数，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.StartReceiveBlob（字节[]缓冲区，AsyncProtocolRequest asyncRequest）
在System.Net.Security.SslState.CheckCompletionBeforeNextReceive（ProtocolToken消息，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.ProcessReceivedBlob（字节[]缓冲区，Int32计数，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.StartReceiveBlob（字节[]缓冲区，AsyncProtocolRequest asyncRequest）
在System.Net.Security.SslState.CheckCompletionBeforeNextReceive（ProtocolToken消息，AsyncProtocolRequest asyncRequest）
位于System.Net.Security.SslState.ForceAuthentication（布尔值receiveFirst，字节[]缓冲区，AsyncProtocolRequest asyncRequest）
在System.Net.Security.SslState.ProcessAuthentication（LazyAsyncResult-lazyResult）上
位于MySql.Data.MySqlClient.NativeDriver.StartSSL（）处
在MySql.Data.MySqlClient.NativeDriver.Open（）上
在MySql.Data.MySqlClient.Driver.Open（）上
位于MySql.Data.MySqlClient.Driver.Create（MySqlConnectionStringBuilder设置）
在MySql.Data.MySqlClient.MySqlPool.CreateNewPooledConnection（）上
在MySql.Data.MySqlClient.MySqlPool.GetPooledConnection（）上
在MySql.Data.MySqlClient.MySqlPool.TryToGetDriver（）上
在MySql.Data.MySqlClient.MySqlPool.GetConnection（）上
在MySql.Data.MySqlClient.MySqlConnection.Open（）上
在Dapper.SqlMapper.d_u61`1.MoveNext（）中
位于System.Collections.Generic.List`1..ctor（IEnumerable`1集合）
at System.Linq.Enumerable.ToList[TSource]（IEnumerable`1 source）
在Dapper.SqlMapper.Query[T]（IDbConnection cnn、字符串sql、对象参数、IDbTransaction事务、布尔缓冲、可为null的`1 commandTimeout、可为null的`1 commandType）
在

---

为什么只有一些请求变成SSPI异常？如何修复它？如果需要其他信息，请告诉我。

您的代码运行的是什么版本的Windows？Windows Server 2016数据中心有任何进展吗？@GeorgeVardikos无进展！如果有人帮助我解决此问题，仍在等待。@ssharma引发此异常的服务正在多台服务器上运行？换句话说，您是否在分布式系统体系结构上运行此功能？