Steven Sinofsky, Windows President, Leaves Microsoft After 23 Years; Addresses Timing of Departure in Memo

Windows President Steven Sinofsky has left Microsoft, effective immediately.

The departure of the Windows president may come as a surprise as Microsoft has been unveiling new devices and software in the recent weeks such as the Microsoft Surface, Windows Phone 8, and Windows 8 operating system.

Microsoft CEO Steve Ballmer issued a statement, "I am grateful for the many years of work that Steven has contributed to the company. The products and services we have delivered to the market in the past few months mark the launch of a new era at Microsoft."

Ballmer added that with Sinofsky, an "incredible foundation" of new releases were made including Microsoft Office, Windows 8, Windows Phone 8, Microsoft Surface, Windows Server 2012 and "Halo 4."

"It is impossible to count the blessings I have received over my years at Microsoft. I am humbled by the professionalism and generosity of everyone I have had the good fortune to work with at this awesome company," said Sinofsky.

Julie Larson-Green will replace Sinofsky. She has been with Microsoft since 1993 and has been responsible for the program management of Windows 7 and Windows 8. Larson-Green will now be responsible for upcoming Windows products.

But according to a new memo, Ballmer stated Sinofsky made the decision to leave the company.  Sinofsky also issued his own memo to Microsoft staff, stating, "With the general availability of Windows 8/RT and Surface, I have decided it is time for me to take a step back from my responsibilities at Microsoft. I've always advocated using the break between product cycles as an opportunity to reflect and to look ahead, and that applies to me too."

In regards to possible rumors, Sinofsky also addressed it, "Some might notice a bit of chatter speculating about this decision or timing. I can assure you that none could be true as this was a personal and private choice that in no way reflects any speculation or theories one might read-about me, opportunity, the company or its leadership."