Custom Ribbon Question

Good Day,

I have a question and a dilemma. IT has ensured that noextensibilitycustomizationfromdocument policy prevents a custom ribbon form MS Access. I want to be clear I am not asking for any information to circumvent or get around this but to work within their rules. Now what is interesting is that I have created a custom ribbon for MS Excel and that works fine where the same policies have been applied to that application.

Questions: Why can I create and execute a custom ribbon with Excel using XML but not Access?
Is there a different mechanism for which MS Access loads the custom ribbon as opposed to Excel?


I am just trying to understand what is going on.