I need someone to fix this problem I have with my site. I am using the Xigla Absolute Video on a Virtual Server (Windows Server 2008 R2 and IIS 7.5)
This is the message I get when I try to upload a video file.
"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"