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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Validation of viewstate MAC failed in DNN 4.4.1Validation of viewstate MAC failed in DNN 4.4.1
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2/28/2007 6:21 AM
 
Michael

Joined: 8/4/2004
Posts: 181
One of my users triggered a a page load exception which had an inner exception of
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.

My DNN site is on a single dual processor box and this is the first error of this type I've encountered since upgrading from 4.4.0 to 4.4.1 about a week ago, I don't think its linked to the machineKey or validationKey in the web.config file because admins and users are able to log in, update tabs and modules.

Any ideas???

*********
AssemblyVersion: 04.04.01
PortalID: 0
PortalName: PORTALNAME
UserID: -1
UserName:
ActiveTabID: 73
ActiveTabName: Entry Qualifications
RawURL: /Courses/DigitalMedia/EntryQualifications/tabid/73/ctl/Terms/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.cdi.ul.ie/Courses/DigitalMedia/EntryQualifications/tabid/73/ctl/Terms/Default.aspx
UserAgent: Opera/9.0 (Windows NT 5.1; U; en)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: b0bf3b18-bda3-4243-ab6d-f98596c43a74
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.GetDecodedData
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: 201.87.13.55 Port: 2946 User-Agent: Opera/9.0 (Windows NT 5.1; U; en) ViewState: 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 DQo8c3BhbiBjbGFz... ---> System.Web.HttpException: Unable to validate data. at System.Web.Configuration.MachineKeySection.GetDecodedData(Byte[] buf, Byte[] modifier, Int32 start, Int32 length, Int32& dataLength) 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.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 ---
Source:
Server Name: SERVERNAME
***********
 
New Post
2/28/2007 7:55 AM
 

Joined: 1/1/0001
Posts: 0
This is caused by the browser that user has. I redirect Opera and older browsers to a page where I tell them to upgrade to Firefox or Internet Explorer latest versions.
 
New Post
2/28/2007 7:59 AM
 
Michael

Joined: 8/4/2004
Posts: 181
Is it easy to redirect based on browser type in DNN to a page?
Also based on the agent string above the user appears to be using a new version of Opera anyway
 
New Post
2/28/2007 8:04 AM
 

Joined: 1/1/0001
Posts: 0
'Redirect based on browser

 If Instr(Request.UserAgent(), "Opera") > 0 Or Instr(Request.UserAgent(), "Netscape") > 0  Then
Response.Redirect(http:/yourdomain/browser.html)
End If
 
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