The move, announced on Sinofsky's personal blog on Thursday, is slightly surprising given Marc Andreessen, co-founder of the venture capital firm, has long been a critic of Microsoft, since Microsoft effectively crushed his Netscape Communications browser company in the 1990s.
Founded in 2009, Andreessen Horowitz is one of Silicon Valley's newest and most prominent venture funds, which has recently backed companies such as photo-sharing business Instagram and accommodation service Airbnb.
Sinofsky left Microsoft unexpectedly in November, just after he led the rollout of Windows 8, after an uncomfortable relationship with CEO Steve Ballmer.
He has kept a low profile since then, teaching a class at Harvard Business School. An agreement with Microsoft prevents him from working with direct rivals such as Amazon.com Inc, Apple Inc or Facebook Inc for a year.
"I'm especially excited to learn by spending more time with entrepreneurs and those creating new technologies and products," said Sinofsky on his blog. "Andreessen Horowitz is a VC firm that believes deeply in helping entrepreneurs and helping change the product and business landscape."
© Thomson Reuters 2013
Get your daily dose of tech news, reviews, and insights, in under 80 characters on Gadgets 360 Turbo. Connect with fellow tech lovers on our Forum. Follow us on X, Facebook, WhatsApp, Threads and Google News for instant updates. Catch all the action on our YouTube channel.
Samsung Galaxy Watch 9 (44mm, LTE)
Starts from ₹44,999
Samsung Galaxy Watch 9 (40mm, LTE)
Starts from ₹37,999
Samsung Galaxy Watch 9 (40mm)
Starts from ₹37,999
Haier M70 Mini LED 65-inch
Starts from ₹74,990
CMF Buds Neo True Wireless Stereo (TWS) Earphones
Starts from ₹2,199
Xiaomi TV FX Mini LED 65
Starts from ₹64,999
IFA 2026: Lenovo Unveiled New IdeaPad, Yoga and ThinkBook Laptops
IFA 2026: Nvidia RTX Spark PCs, Local AI Tools Announced With October Launch Planned
Luna Band Now Available Globally: Check Price in India, Specifications and Features