I have an ADFS environment with a load balancer going to 2 proxies and another load balancer going to 2 issuers. If both of the proxy servers are in the pool, I am getting the error below when routing to relying party applications.
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"Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. http://go.microsoft.com/fwlink/?LinkID=314055"
If only one of the proxy servers is in the pool, all downstream apps work fone.
I looked in the ADFS web.config files and this setting exists on all servers: pages enableViewState="false" enableViewStateMac="false"
Any info would be greatly appreciated.
Thanks....