Common active x popup message when trying to run Microsoft dynamics ax, can be occur after new installations or after uninstalling previous versions of AX.
The error occurs because smmPhone.ocx needs to be registered on the system. SmmPhone.ocx can be located in C:\Program Files\Microsoft Dynamics Ax\Common ( other dll's and .ocx files for AX can also be found here.)
to register the dll file from command line or run
regsvr32 "C:\Program Files\Microsoft Dynamics AX\Common\smmPhone.ocx"