Adding machineKey to web.config on web-farm sites

This should answer: How To: Configure MachineKey in ASP.NET 2.0 – Web Farm Deployment Considerations Web Farm Deployment Considerations If you deploy your application in a Web farm, you must ensure that the configuration files on each server share the same value for validationKey and decryptionKey, which are used for hashing and decryption respectively. This … Read more