Microsoft saw its profits dip in the final three months of last year.
The announcement comes after the technology giant reported boosted revenues as a result of the launch of Windows 8 in October 2012.
However, while the introduction of Windows 8 has helped with record revenues in the last quarter, profits are slightly down from the same period a year ago.
Net profit for the final three months of the year was $6.4 billion (£4.1 billion), down four per cent from a year earlier, while revenue was up 3 per cent at $21.5 billion.
“Our big, bold ambition to reimagine Windows as well as launch Surface and Windows Phone 8 has sparked growing enthusiasm with our customers and unprecedented opportunity and creativity with our partners and developers,” said Steve Ballmer, chief executive officer at Microsoft.
Although Microsoft did not release sales figures for its new tablet computer, Surface or its new Windows 8 phone system, Windows remains the dominant platform for personal computers.
Microsoft’s results come in the same week that Apple reported record quarterly revenues of $55bn.