Office 365 Integration Service reports do not run after you install Update Rollup 1 for Windows Server 2012 Essentials:
Install Update Rollup 2781267 if you transition from Windows Server 2012 Essentials to Windows Server 2012 Standard:
If you transitioned out of Essentials, right now the update rollup won’t be offered up. If you want it now, you can manually download it.
Detection will be fixed, but I’m not sure when.