The test build, known as Milestone 5 (M5), still doesn't incorporate Microsoft's new file system, called Windows Future Storage (based on the next version of SQL Server, code-named Yukon).

An internal alpha build of Microsoft's next version of Windows, code-named Longhorn, made its way onto the Internet early Tuesday.

Best Windows antivirus software of 2025; ... (CTP) of Longhorn Server, build 5600, was released to Microsoft Developer Network and TechNet subscribers over the weekend.

A third internal test version of the successor to Microsoft’s desktop Windows XP operating system was leaked onto the Internet last week, showing incremental enhancements over the version that ...

"The Longhorn team was walking a tightrope," recalled Plummer. "Innovate aggressively, but don't break Windows. Not an easy balancing act." Then came the infamous memo in 2002, in which Microsoft ...