Last summer, Microsoft cut thousands of jobs from its mobile division, and the last phone it produced in-house was 2015's Lumia XL.
The company had launched its mobile operating system in 2000 and a Windows CE software for personal digital assistants, known as PDAs, in 1996.
"Of course we'll continue to support the platform. bug fixes, security updates, etc", Joe Belfiore tweeted.
The Windows Phone first debuted in 2010, and the Windows Mobile operating system quickly became the third most popular OS in the world.
Chief executive Satya Nadella has also shifted the firm's focus to its cloud platform and products such as Office 365, a strategy that has proved successful in returning the company to a stable base. Figures published earlier this year by IDC claimed Windows Phone accounted for just 0.1% of the global smartphone market. This in turn made deterred developers from working on apps for Windows Phone.
Windows Phone, we hardly knew ye. But the number of users was too low for most of the companies invest. With Belfiore admitting that even he has switched to Android, it is like a punch in the teeth of Microsoft.
A major shortfall in the life of Windows Mobile has been the lack of apps which compelled users to move away. Nearly for as long as it's existed, Microsoft's mobile platform has suffered from an "app gap" that's made it unappealing to consumers.
We have been talking for months about the unofficial demise of Windows Mobile - the mobile platform that was seen to pose some serious threat to Android and iOS. Skype and WhatsApp had also withdrawn their services from phones run on Windows.
Joe Belfiore addresses this in one of his tweets about the platform, writing: "We have tried VERY HARD to incent app devs".