Invalid Viewstate

http://www.developmentnow.com/blog/InvalidViewstate+Or+Unable+To+Validate+Data+Error.aspx

We've seen quite a few of these errors.  Appears to be and IE 8 issue.

http://www.31a2ba2a-b718-11dc-8314-0800200c9a66.com/2009/05/scriptresourceaxd-invalid-viewstate.html

https://connect.microsoft.com/IE/feedback/details/467062/bug-ie8-4k-dropped-invalid-viewstate-when-loading-scriptresource-axd-or-webresource-axd-asp-net

We haven't been able to substantiate any negative impact to our end users due to this issue.


eric

Im getting a substantial number of them

Generate your machine key at http://www.orcsweb.com/articles/aspnetmachinekey.aspx

Modify the web.config file to

<?xml version="1.0"?>

<configuration>

    <appSettings/>
    <connectionStrings/>
    <system.web>

        <machineKey validationKey='4XXXXABBECEAAD1E5C5BC0791ED5AB9A2CB4BE34D24BFAE882E295279A339F8069E02CC0AA2C3C871928ABD0C30019ADC5E064D24C48D95C72614C2ACFD99D' decryptionKey='B7420221667B35322DB8602DB91D25AB623F76C7D66B998E' validation='SHA1'/>

    </system.web>
</configuration>


There you have it. You have cured your view state errors.

I have 1-2 such errors a day, v1.2. Did compucell solution work for anybody? i'm a bit reluctant to put hardcoded machineKey  in web.config unless it fixes the problem for sure.

Yeah it seems like most servers don't have this problem. But if yours does cause it i am afraid its the only way out.