MBD revenue decreased, due mainly to the deferral of $689 million of revenue related to the Office Upgrade Offer and $99 million of revenue related to Office Pre-Sales. This decrease was offset in part by overall increased sales of the Microsoft Office system. Business revenue increased $196 million or 4%, primarily reflecting growth in multi-year volume licensing revenue and a 12% increase in Microsoft Dynamics revenue. Consumer revenue decreased $815 million or 67%, driven primarily by the Office Deferral.
MBD revenue for the three months ended December 31, 2012 included an unfavorable foreign currency impact of $103 million.
MBD operating income decreased, mainly due to lower revenue.