For users on older platforms, Error 50005 often signifies that the ECM requires a security "handshake" that the older software cannot provide.
Are you using an or a specific version like 8.6 or 8.7 , so I can provide more tailored technical steps? RELEASE NOTES for INSITE 8.1.0 Cummins Insite Error 50005
: A disruption between the INSITE software and the vehicle's ECM. For users on older platforms, Error 50005 often