Products

Evoq Content Overview Content Creation Workflow Asset Management Mobile Responsive Personalization Content Analytics SEO Integrations Security Website PerformanceEvoq Engage Overview Community Management  Dashboard  Analytics  Member Profile Gamification Advocate Marketing Community Engagement  Ideas  Answers  Discussions  Groups  Wikis  Events Mobile ReadyDNN Support PackagesEvoq: CMS FeaturesEvoq OnDemandCompare DNN's CMS Products

Solutions

Content Management SystemMulti-Channel PublishingDigital MarketingOnline Community ManagementIntranet Software SolutionOur CustomersPrime

Resources

Test DrivesSchedule A DemoDocumentation CenterWebinarsWhite PapersProduct ManualsRequest PricingData SheetsCase StudiesEvoq Preferred Products Content Management Ecommerce Forms Identity Management and Authentication Site Management Social Themes

Partners

DNN Partners Partner Directory Become a DNN Partner Partner Program Overview  Hosting  Implementation  ISV  Training  Competencies

Community

Participate Ask a Question Forums Community Showcase DNN MVP  Program Overview  Lifetime MVPs  Honorary MVPs Subscribe to DNN Digest Advisory Groups  Awareness Advisory Group  Developer Advisory Group  Partner Advisory Group  Technology Advisory GroupLearn Documentation Wiki Community Blog Video Library Project History Development RoadmapDownload DNN Store Language Packs Manuals Nightly BuildsSecurity Policies Security Center

Blog

About

News Press Releases News Coverage Press KitCareersContact DNN

QA

Ideas Test

New Community Website

Ordinarily, you'd be at the right spot, but we've recently launched a brand new community website... For the community, by the community.

Yay... Take Me to the Community!

Welcome to the DNN Community Forums, your preferred source of online community support for all things related to DNN.
In order to participate you must be a registered DNNizen
HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Validation of Viewstate MAC FailedValidation of Viewstate MAC Failed
Previous
 
Next
New Post
4/10/2012 10:34 AM
 
David Forrester


Joined: 8/26/2010
Posts: 13

 We intermitantly get this error on a all of our installations of DotNetNuke, the portal this error is from is running version 5.6.3, can anyone give me any assistance in resolving this issue.  We are not using a web server farm or cluster as mentioned in the error message.

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.

 Full Details

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: 178.239.96.249Port: 31488User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0ViewState: 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...--- End of inner exception stack trace ---at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidati )at System.Web.UI.ViewStateException.ThrowMacValidati (Exception inn

 
New Post
4/10/2012 11:06 AM
 

Joined: 1/1/0001
Posts: 0

Do you have a web garden configured in IIS? Basically multiple IIS worker processes configured on the application pool. This can cause the error. Also if the application pool recycles during a post back you'll see this error.
 
New Post
4/10/2012 11:51 AM
 
David Forrester


Joined: 8/26/2010
Posts: 13
Thank you for your assistance but the Maximum number of Worker processes on the application Pool is 1 and the last recycle event was around 3PM on 09/04/2012 and the events I am looking at accurred on the 10/04/2012.  The application pool is configured to restart every 1740 minutes.
 
New Post
4/11/2012 10:21 AM
 
Gilles Le Pigocher


Joined: 10/11/2003
Posts: 1966

Hi David,

I have the same problem with a website and IMHO it's probably some crackers trying to steal your website using the POET attack, because if you look in the error message you can see than the request come from a high port number : 178.239.96.249Port: 31488

Gilles

We (team members) are Humans offering their knowledge, their work and their spare time FOR FREE to benefit the community. It would be so particularly appreciated that your messages begin with "Hello" and end with "Thank you" or any other form of politeness. Ask yourself what your reaction would be, if you were approached by me (a total stranger) on the street to ask you something without saying "Hello" nor "Thank you"? After several years of services dedicated to the community, I begin to be tired to read requests without any form of politeness.
 
New Post
4/12/2012 4:52 AM
 
David Forrester


Joined: 8/26/2010
Posts: 13
Not 100% sue about that because i was looking into an issue that caused errors for a site user that occurred at the same time as this error.  i assumed this error was the one generated by the user on the site.  if it is the POET attack is there anything i should do?
 
 Page 1 of 2
12Next 
Previous
 
Next
HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Validation of Viewstate MAC FailedValidation of Viewstate MAC Failed


These Forums are dedicated to discussion of DNN Platform and Evoq Solutions.

For the benefit of the community and to protect the integrity of the ecosystem, please observe the following posting guidelines:

  1. No Advertising. This includes promotion of commercial and non-commercial products or services which are not directly related to DNN.
  2. No vendor trolling / poaching. If someone posts about a vendor issue, allow the vendor or other customers to respond. Any post that looks like trolling / poaching will be removed.
  3. Discussion or promotion of DNN Platform product releases under a different brand name are strictly prohibited.
  4. No Flaming or Trolling.
  5. No Profanity, Racism, or Prejudice.
  6. Site Moderators have the final word on approving / removing a thread or post or comment.
  7. English language posting only, please.
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out