Microsoft Dynamics CRM Product Key Is Not Valid or Cannot Be Used with the Current Deployment in CRM 2011
i face invalid product key error when i add a new Front End node to the existing CRM 2011 deployment with Rollup14. I think,Rollup 6 and Rollup 14 has significant changes on the deployment. You can ignore "System Check" via Registry to continue installing process of the CRM 2011.
To do :
Just add the DWORD key IgnoreChecks with a value of "1" to the MSCRM key in the registry [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSCRM].