Invalid Action: The Selected Action Was Not valid

Problem : Some time we get an error after login to our crm organization which says "Invalid action: the selected action was not valid" as shown below

 

if you review the event log you will find following error description

Error Detail: Current active key (KeyType : CrmWRPCTokenKey) is expired. This can indicate that a key is not being regenerated properly. Current Active Key : CrmKey(Id:e1a5b215-d01e-de11-9d16-0003ffd0167c, ScaleGroupId:00000000-0000-0000-0000-000000000000, KeyType:CrmWRPCTokenKey, Expired:True, ValidOn:09/01/2012 15:16:36, ExpiresOn:10/02/2013 17:12:31, createdBy:NT AUTHORITY\NETWORK SERVICE. Key Setting :

Resolution:

Go to your services by running services.msc and Restarting the Microsoft CRM Asynchronous Processing Service

:)