The company I work at has an AVD setup on Microsoft 365 GCC High specifically for client engagements where we deal with CUI. However, for some reason, they have disabled OneDrive functionality on it. We can still use SharePoint, Outlook, and Teams, but OneDrive is completely disabled.

Does anyone have a guess as to why? It's my understanding that OneDrive in M365 GCC High would be using the same server as the other services and has the same certifications, controls, etc. I want to make the case for us to use it, as I think it would get more people to move from our shitty on-premises shared drive to the AVD side of things.

Apologies if my terminology or understanding is incorrect. I'm not an IT professional but trying to learn.