Viewstate Error

[.NET Developer]

We are getting lot of this error on the production web app environment.
However we are not able to reproduce this error in the test environment.
What are the various causes for this error? How to reproduce them? and
eventually how to resolve this?

Thanks


Exception Details: System.Web.HttpUnhandledException: Exception of type
System.Web.HttpUnhandledException was thrown.

Source Error: The viewstate is invalid for this page and might be corrupted.

 

[Eliyahu Goldin]

What is your sessionState setting in Web.config?

Eliyahu

 

[.NET Developer]

<sessionState
mode="InProc"
stateConnectionString="tcpip=127.0.0.1:42424"
sqlConnectionString="data source=127.0.0.1;user id=sa;password="
cookieless="false"
timeout="20"
/>

This application is hosted on a web farm. But since we do not have a session
server or SQL server that manages session we have implemented sticky so that
the request from the same user is redirected to a same web server.