AX Updates – Kernel/Application/Service Pack.

The variety of different updates available for AX can be confusing for a newcomer to the product, so here is an explanation of what they all are:

- Application Updates – aka the DIS layer. This is a cumulative release of all hotfixes to date delivered in an aod (application object data) file. This is how hotfixes are delivered from Microsoft. These releases need to be tested in the customer’s environment before going live.

- Service Packs – aka the SYP layer. Periodically the DIS layer releases will be replaced with a SYP layer release in the form of a service pack, all of the hotfixes from the DIS layer are moved to the SYP layer. The key difference between the service pack release and the DIS layer release is that the service pack will have undergone full testing at Microsoft.

- Kernel updates – there are also periodic updates to the application kernel (the AX program outside of any layer files), these are delivered via executables, to update the various programs involved in AX: the client, AOS service, business connector, COM connector, .NET connector.

Best Regards,

Tariq Bell