Erratic Invalid Viewstate issue in a .NET application

Question

I seem to be getting a \"invalid viewstate\" every now and then in the event viewer for my ASP.NET application.

Most of them (95%) seem to be referencing Scrip

Answer 1

Are you running a non-english Operation System?

For some reasons, the account name of "NT Authority\Network Service" has been localized in other languages.
Sadly, a lot of programs have the account name hard coded to the english name, and won't find the Network Service when running on foreign versions of Windows, leading to all kind of funky errors in the event log.