Integrate Azure Rights Management
At the moment there are separate apps if you want to use Azure Rights Management. Why not integrate this functionality into OneDrive?
Robert Shields commented
If IRM craps out OneDrive for Business sync client then that is abysmal. There seems to be a lot of these types of compatibility issues between OneDrive and SharePoint Online.
Actually it's worse then that.. If you turn on IRM in SharePoint and set the policy the sync client craps out and won't sync the files.. A big fail as I will not deploy OneDrive corporately until this is fixed.