Error: Validation of viewstate MAC failed

[pikasoft]

I'm getting this error on my ASP.Net application when it is hosted on Redfox...

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.

The error occurs when I click a button on the page before the page has fully loaded. The button causes a postback, but I guess the viewstate hasn't completed downloaded, and hence isn't being sent back complete.

Am I correct in thinking this is a problem with my application, and not the hosting settings as the error message infers.

What can i do about it?

Thanks

[RFH Reseller: JohnnyW]

I've also been getting these errors, I take it you're also using V2 of the framework?

[RFH Reseller: JohnnyW]

Just did a quick google search on the error there's some info and a potential workaround on this blog http://aspadvice.com/blogs/joteke/ar.../02/15011.aspx

[pikasoft]

Thanks for the reply. This did fix the issue, but of course drops the security.

[Staff: Warren Ashcroft]

Its a .NET issue though, nothing that can be done until they fix it.