Validation of viewstate MAC failed

When you access your site and you notice the below error message in your web browser:

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

You need to add  the below code in your web.config file:

<pages enableViewStateMac="false" />

  • 0 Users Found This Useful
Was this answer helpful?

Related Articles

SQL server- network related or instance-specific error happened while connection establishing

  Instance-specific or network related error happening while connecting to SQL server   Please...

OleDB connection string examples

OleDB connection string examples MS Access (Jet) "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA...

Do you allow custom COM components?

Do you allow custom COM components? We are not offering to install the custom COM components...

Error when accessing a WCF services

Error when accessing a WCF services Error when accessing a WCF service: "IIS specified...

How to cache static contents to client with UseMaxAge?

You can consider to caches static contents to the client with UseMaxAge if your website has too...

Powered by WHMCompleteSolution