"Current active key expired" Error
A client was getting an "Invalid Action" error when trying to open their Microsoft CRM 4.0 (on-premise) application. Checking the event log, showed the following: Event Type: ErrorEvent Source: MSCRMKeyGeneratorEvent Category: NoneEvent ... Description: Current active key (KeyType : CrmWRPCTokenKey) is expired. This can indicate that a key is not being regenerated properly. Starting the Microsoft CRM Asynchronous Processing Service on the server solved the problem! Kevin Dosseray