If you haven't already see http://stackoverflow.com/questions/121579
for some additional things to look at relating to this error. On Tue, Jun 1, 2010 at 11:42 AM, Tiang Cheng <[email protected] > wrote: > Hi all, > > > > I’m receiving a http web exception “Validation of viewstate MAC failed. If > this application is hosted by a Web Farm or cluster, ensure that > <machineKey> >
