Event viewer error being logged after upgrade from 5.1.4 to 5.4.3:

I've done some looking into this and a lot of people agree that it is a "problem" with the .NET Framework in that when a button on an encrypted form is clicked before the <form> is completely loaded this error is encountered. Some suggest disabling all the form elements until the form is completely loaded, some suggest editing the web.config to disable encryption, but neither of these sounded like permanent fixes to me. Has the DNN Team looked into this and if so are there any solutions being explored or already available?

ActiveTabName: Order Status
RawURL: /Orders/OrderStatus/tabid/187/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: https://.../Orders/OrderStatus/tabid/187/Default.aspx
UserAgent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; GTB6.5; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 2b9e6f10-0633-4f21-9178-b3248beb068d
InnerException: 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.
FileName: 
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.Configuration.MachineKeySection.EncryptOrDecryptData
StackTrace: 
Message: DotNetNuke.Services.Exceptions.PageLoadException: 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. ---> System.Web.HttpException: 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. ---> System.Web.UI.ViewStateException: Invalid viewstate. Client IP: 172.20.111.21 Port: 34685 User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; GTB6.5; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618) ViewState: 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... ---> System.Web.HttpException: Unable to validate data. at System.Web.Configuration.MachineKeySection.EncryptOrDecryptData(Boolean fEncrypt, Byte[] buf, Byte[] modifier, Int32 start, Int32 length, IVType ivType, Boolean useValidationSymAlgo) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) --- End of inner exception stack trace --- --- End of inner exception stack trace --- at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at System.Web.UI.ViewStateException.ThrowMacValidationError(Exception inner, String persistedState) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) 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) --- End of inner exception stack trace ---

Any additional insight or future fix would be appreciated.

Thank you!


Josh

Steven

I have not received any other information on this.

Here is a pretty good explanation to the problem and some possible solutions:
http://blogs.msdn.com/b/tom/archive/2...

I've been waiting to upgrade and see if that fixes it, if not then I may pursue other means to resolving the issue myself.

Good luck!


Josh

Did anyone find a solution to this. I am getting the same error for alot of our users on DNN 5.6.2 site. Just going through various posts on the forum where people have reported the problem but no definite solution. Please see following page for one of similar discussions on this topic but no result:
http://www.dotnetnuke.com/Resources/Forums/tabid/795/forumid/108/postid/415042/scope/posts/Default.aspx#415042


Regards
Arif Shah