我们有3个服务器设置..其中两个有几乎相同的IIS配置和一个服务器这是设置略有不同。
所有3台服务器都运行相同的应用程序，但在两个副本上，当一个人休眠他们的PC并重新尝试登录（比如20分钟后）时，会出现ViewState错误。
这种情况只发生在2/3的服务器上。我已经比较了所有三个服务器的配置，并且正在努力寻找视图状态错误背后的原因。
在两个副本（未群集，仅运行两个单独应用程序示例的副本配置）服务器上，用户将其PC休眠并尝试在返回时刷新页面后生成以下错误：

********** 18/11/2014 22:01:40 **********

Inner Exception Type: System.Web.UI.ViewStateException

Inner Exception: Invalid viewstate.

                Client IP: HIDDEN

                Port: 61727

                Referer: HIDDEN

                Path: /WERWER/Loginpage.aspx

                User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko

                ViewState: /wEPDwUJMTU3NDQ3OTA5D2QWAgIDD2QWBgIFDxYCHgRUZXh0BQczLjEuNC4zZAIJDxAPFgIeC18hRGF0YUJvdW5kZ2QPFgICAQICFgIQBQtBc3RyYVplbmVjYQUBMWcQBQtBc3RyYVplbmVjcQUBMmdkZAILDw9kDxAWAWYWARYCHg5QYXJhbWV0ZXJWYWx1ZWQWAQIDZGRkfcrsQ9t3t1viPYtGtlL9zhltvqca0XJ8+sAMNb9FJhc=

Inner Source:

Exception Type: System.Web.HttpException

Exception: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

 

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.

Source: Application_Error - Global.asax

Stack Trace:

   at System.Web.UI.ViewStateException.ThrowMacValidationError(Exception inner, String persistedState)

   at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose)

   at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter2 formatter, String serializedState, Purpose purpose)

   at System.Web.UI.HiddenFieldPageStatePersister.Load()

   at System.Web.UI.Page.LoadPageStateFromPersistenceMedium()

   at System.Web.UI.Page.LoadAllState()

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest()

   at System.Web.UI.Page.ProcessRequest(HttpContext context)

   at ASP._aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\appdir\405a4e54\e0bdc3da\App_Web_qp5t5y2q.3.cs:line 0

   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Another Occasion::

********** 16/10/2014 11:29:06 **********

Inner Exception Type: System.Web.UI.ViewStateException

Inner Exception: Invalid viewstate.

                Client IP: hidden

                Port: 63887

                Referer: hidden

                Path: HIDDEN

                User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko

                ViewState: /+kH3Hw9hzBkL2Oug==

Inner Source:

Exception Type: System.Web.HttpException

Exception: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

 

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.

Source: Application_Error - Global.asax

Stack Trace:

   at System.Web.UI.ViewStateException.ThrowMacValidationError(Exception inner, String persistedState)

   at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose)

   at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter2 formatter, String serializedState, Purpose purpose)

   at System.Web.UI.HiddenFieldPageStatePersister.Load()

   at System.Web.UI.Page.LoadPageStateFromPersistenceMedium()

   at System.Web.UI.Page.LoadAllState()

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest()

   at System.Web.UI.Page.ProcessRequest(HttpContext context)

   at ASP._aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\\405a4e54\e0bdc3da\App_Web_uhtljwwn.1.cs:line 0

   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

有人能帮忙吗？

• • 仅供参考：以下是最终用户对情况的描述：**

"好的-我检查了服务器，并在登录页面打开浏览器窗口的情况下休眠了我的PC。
30分钟后重新启动计算机，重新登录并得到我在其他副本服务器上看到的异常消息...
与我一起工作的人指出，我可以通过设置固定的机器密钥来解决这个问题-我应该将哪个机器密钥设置为"固定"？似乎有三个级别（可以从顶级IIS结构设置的机器密钥，可以从网站级别设置的密钥，以及可以从虚拟站点级别设置的密钥？？）
我应该更改哪个密钥？为什么需要3个单独的"机器密钥"配置？
非常感谢!